Row_ID
int64 1
30.2M
| Topic
stringclasses 3
values | Subtopic
stringclasses 4
values | Question
stringclasses 13
values | Answer_1
stringclasses 11
values | Explanation_1
stringclasses 12
values | Answer_2
stringclasses 11
values | Explanation_2
stringclasses 11
values | Answer_3
stringclasses 0
values | Explanation_3
stringclasses 0
values | Difficulty
stringclasses 2
values |
|---|---|---|---|---|---|---|---|---|---|---|
5,401 |
Organic Chemistry
|
Alkenes
|
HCl+2-methylpropene product?
|
2-chloro-2-methylpropane
|
HCl adds; yields 2-chloro-2-methylpropane.
|
tert-butyl chloride
|
Same: tert-butyl chloride.
| null | null |
Hard
|
5,402 |
Inorganic Chemistry
|
Oxidation States
|
Co ox.state in [Co(NH3)6]3+?
|
+3
|
[Co(NH3)6]3+: Co=+3.
|
Co(III)
|
+3=III.
| null | null |
Expert
|
5,403 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.1s^-1?
|
6.9s
|
t1/2=0.693/0.1=6.9s.
|
~7s
|
t1/2≈0.7/0.1=7s.
| null | null |
Hard
|
5,404 |
Inorganic Chemistry
|
Oxidation States
|
Fe ox.state in [Fe(CN)6]4-?
|
+2
|
[Fe(CN)6]4-: Fe=+2.
|
Fe(II)
|
+2=II.
| null | null |
Expert
|
5,405 |
Inorganic Chemistry
|
Oxidation States
|
Fe ox.state in [Fe(CN)6]4-?
|
+2
|
[Fe(CN)6]4-: Fe=+2.
|
Fe(II)
|
+2=II.
| null | null |
Expert
|
5,406 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.02s^-1?
|
34.6s
|
t1/2=0.693/0.02=34.6s.
|
~35s
|
t1/2≈0.7/0.02=35s.
| null | null |
Hard
|
5,407 |
Inorganic Chemistry
|
Oxidation States
|
Co ox.state in [Co(NH3)6]3+?
|
+3
|
[Co(NH3)6]3+: Co=+3.
|
Co(III)
|
+3=III.
| null | null |
Expert
|
5,408 |
Inorganic Chemistry
|
Oxidation States
|
Fe ox.state in [Fe(CN)6]4-?
|
+2
|
[Fe(CN)6]4-: Fe=+2.
|
Fe(II)
|
+2=II.
| null | null |
Expert
|
5,409 |
Organic Chemistry
|
Alkenes
|
HBr+1-butene product?
|
2-bromobutane
|
HBr adds; yields 2-bromobutane.
|
sec-butyl bromide
|
Same: sec-butyl bromide.
| null | null |
Hard
|
5,410 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
5,411 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.1s^-1?
|
6.9s
|
t1/2=0.693/0.1=6.9s.
|
~7s
|
t1/2≈0.7/0.1=7s.
| null | null |
Hard
|
5,412 |
Organic Chemistry
|
Alkenes
|
HBr+1-butene product?
|
2-bromobutane
|
HBr adds; yields 2-bromobutane.
|
sec-butyl bromide
|
Same: sec-butyl bromide.
| null | null |
Hard
|
5,413 |
Inorganic Chemistry
|
Oxidation States
|
Co ox.state in [Co(NH3)6]3+?
|
+3
|
[Co(NH3)6]3+: Co=+3.
|
Co(III)
|
+3=III.
| null | null |
Expert
|
5,414 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
5,415 |
Organic Chemistry
|
Alkenes
|
HBr+1-methylcyclohexene product?
|
1-bromo-1-methylcyclohexane
|
HBr adds; yields 1-bromo-1-methylcyclohexane.
|
1-methyl-1-bromocyclohexane
|
Same: 1-methyl-1-bromocyclohexane.
| null | null |
Hard
|
5,416 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.05s^-1?
|
13.9s
|
t1/2=0.693/0.05=13.9s.
|
~14s
|
t1/2≈0.7/0.05=14s.
| null | null |
Hard
|
5,417 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.01s^-1?
|
69.3s
|
t1/2=0.693/0.01=69.3s.
|
~70s
|
t1/2≈0.7/0.01=70s.
| null | null |
Hard
|
5,418 |
Inorganic Chemistry
|
Oxidation States
|
Fe ox.state in [Fe(CN)6]4-?
|
+2
|
[Fe(CN)6]4-: Fe=+2.
|
Fe(II)
|
+2=II.
| null | null |
Expert
|
5,419 |
Inorganic Chemistry
|
Oxidation States
|
Co ox.state in [Co(NH3)6]3+?
|
+3
|
[Co(NH3)6]3+: Co=+3.
|
Co(III)
|
+3=III.
| null | null |
Expert
|
5,420 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.01s^-1?
|
69.3s
|
t1/2=0.693/0.01=69.3s.
|
~70s
|
t1/2≈0.7/0.01=70s.
| null | null |
Hard
|
5,421 |
Inorganic Chemistry
|
Oxidation States
|
Fe ox.state in [Fe(CN)6]4-?
|
+2
|
[Fe(CN)6]4-: Fe=+2.
|
Fe(II)
|
+2=II.
| null | null |
Expert
|
5,422 |
Inorganic Chemistry
|
Oxidation States
|
Co ox.state in [Co(NH3)6]3+?
|
+3
|
[Co(NH3)6]3+: Co=+3.
|
Co(III)
|
+3=III.
| null | null |
Expert
|
5,423 |
Organic Chemistry
|
Alkenes
|
HCl+2-methylpropene product?
|
2-chloro-2-methylpropane
|
HCl adds; yields 2-chloro-2-methylpropane.
|
tert-butyl chloride
|
Same: tert-butyl chloride.
| null | null |
Hard
|
5,424 |
Inorganic Chemistry
|
Oxidation States
|
Co ox.state in [Co(NH3)6]3+?
|
+3
|
[Co(NH3)6]3+: Co=+3.
|
Co(III)
|
+3=III.
| null | null |
Expert
|
5,425 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.1s^-1?
|
6.9s
|
t1/2=0.693/0.1=6.9s.
|
~7s
|
t1/2≈0.7/0.1=7s.
| null | null |
Hard
|
5,426 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
5,427 |
Organic Chemistry
|
Alkenes
|
HCl+1-butene product?
|
unknown
|
HCl adds; yields unknown.
|
unknown
|
Same: unknown.
| null | null |
Hard
|
5,428 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
5,429 |
Inorganic Chemistry
|
Oxidation States
|
Fe ox.state in [Fe(CN)6]4-?
|
+2
|
[Fe(CN)6]4-: Fe=+2.
|
Fe(II)
|
+2=II.
| null | null |
Expert
|
5,430 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
5,431 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
5,432 |
Inorganic Chemistry
|
Oxidation States
|
Co ox.state in [Co(NH3)6]3+?
|
+3
|
[Co(NH3)6]3+: Co=+3.
|
Co(III)
|
+3=III.
| null | null |
Expert
|
5,433 |
Organic Chemistry
|
Alkenes
|
HCl+1-methylcyclohexene product?
|
unknown
|
HCl adds; yields unknown.
|
unknown
|
Same: unknown.
| null | null |
Hard
|
5,434 |
Inorganic Chemistry
|
Oxidation States
|
Co ox.state in [Co(NH3)6]3+?
|
+3
|
[Co(NH3)6]3+: Co=+3.
|
Co(III)
|
+3=III.
| null | null |
Expert
|
5,435 |
Organic Chemistry
|
Alkenes
|
HCl+1-butene product?
|
unknown
|
HCl adds; yields unknown.
|
unknown
|
Same: unknown.
| null | null |
Hard
|
5,436 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.02s^-1?
|
34.6s
|
t1/2=0.693/0.02=34.6s.
|
~35s
|
t1/2≈0.7/0.02=35s.
| null | null |
Hard
|
5,437 |
Inorganic Chemistry
|
Oxidation States
|
Fe ox.state in [Fe(CN)6]4-?
|
+2
|
[Fe(CN)6]4-: Fe=+2.
|
Fe(II)
|
+2=II.
| null | null |
Expert
|
5,438 |
Organic Chemistry
|
Alkenes
|
HBr+1-methylcyclohexene product?
|
1-bromo-1-methylcyclohexane
|
HBr adds; yields 1-bromo-1-methylcyclohexane.
|
1-methyl-1-bromocyclohexane
|
Same: 1-methyl-1-bromocyclohexane.
| null | null |
Hard
|
5,439 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
5,440 |
Inorganic Chemistry
|
Oxidation States
|
Fe ox.state in [Fe(CN)6]4-?
|
+2
|
[Fe(CN)6]4-: Fe=+2.
|
Fe(II)
|
+2=II.
| null | null |
Expert
|
5,441 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.05s^-1?
|
13.9s
|
t1/2=0.693/0.05=13.9s.
|
~14s
|
t1/2≈0.7/0.05=14s.
| null | null |
Hard
|
5,442 |
Organic Chemistry
|
Alkenes
|
HCl+2-methylpropene product?
|
2-chloro-2-methylpropane
|
HCl adds; yields 2-chloro-2-methylpropane.
|
tert-butyl chloride
|
Same: tert-butyl chloride.
| null | null |
Hard
|
5,443 |
Inorganic Chemistry
|
Oxidation States
|
Co ox.state in [Co(NH3)6]3+?
|
+3
|
[Co(NH3)6]3+: Co=+3.
|
Co(III)
|
+3=III.
| null | null |
Expert
|
5,444 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.1s^-1?
|
6.9s
|
t1/2=0.693/0.1=6.9s.
|
~7s
|
t1/2≈0.7/0.1=7s.
| null | null |
Hard
|
5,445 |
Organic Chemistry
|
Alkenes
|
HBr+1-butene product?
|
2-bromobutane
|
HBr adds; yields 2-bromobutane.
|
sec-butyl bromide
|
Same: sec-butyl bromide.
| null | null |
Hard
|
5,446 |
Inorganic Chemistry
|
Oxidation States
|
Co ox.state in [Co(NH3)6]3+?
|
+3
|
[Co(NH3)6]3+: Co=+3.
|
Co(III)
|
+3=III.
| null | null |
Expert
|
5,447 |
Inorganic Chemistry
|
Oxidation States
|
Fe ox.state in [Fe(CN)6]4-?
|
+2
|
[Fe(CN)6]4-: Fe=+2.
|
Fe(II)
|
+2=II.
| null | null |
Expert
|
5,448 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.05s^-1?
|
13.9s
|
t1/2=0.693/0.05=13.9s.
|
~14s
|
t1/2≈0.7/0.05=14s.
| null | null |
Hard
|
5,449 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.1s^-1?
|
6.9s
|
t1/2=0.693/0.1=6.9s.
|
~7s
|
t1/2≈0.7/0.1=7s.
| null | null |
Hard
|
5,450 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.05s^-1?
|
13.9s
|
t1/2=0.693/0.05=13.9s.
|
~14s
|
t1/2≈0.7/0.05=14s.
| null | null |
Hard
|
5,451 |
Inorganic Chemistry
|
Oxidation States
|
Co ox.state in [Co(NH3)6]3+?
|
+3
|
[Co(NH3)6]3+: Co=+3.
|
Co(III)
|
+3=III.
| null | null |
Expert
|
5,452 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
5,453 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.02s^-1?
|
34.6s
|
t1/2=0.693/0.02=34.6s.
|
~35s
|
t1/2≈0.7/0.02=35s.
| null | null |
Hard
|
5,454 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.01s^-1?
|
69.3s
|
t1/2=0.693/0.01=69.3s.
|
~70s
|
t1/2≈0.7/0.01=70s.
| null | null |
Hard
|
5,455 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
5,456 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.05s^-1?
|
13.9s
|
t1/2=0.693/0.05=13.9s.
|
~14s
|
t1/2≈0.7/0.05=14s.
| null | null |
Hard
|
5,457 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.1s^-1?
|
6.9s
|
t1/2=0.693/0.1=6.9s.
|
~7s
|
t1/2≈0.7/0.1=7s.
| null | null |
Hard
|
5,458 |
Organic Chemistry
|
Alkenes
|
HBr+2-methylpropene product?
|
unknown
|
HBr adds; yields unknown.
|
unknown
|
Same: unknown.
| null | null |
Hard
|
5,459 |
Inorganic Chemistry
|
Oxidation States
|
Fe ox.state in [Fe(CN)6]4-?
|
+2
|
[Fe(CN)6]4-: Fe=+2.
|
Fe(II)
|
+2=II.
| null | null |
Expert
|
5,460 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.1s^-1?
|
6.9s
|
t1/2=0.693/0.1=6.9s.
|
~7s
|
t1/2≈0.7/0.1=7s.
| null | null |
Hard
|
5,461 |
Inorganic Chemistry
|
Oxidation States
|
Fe ox.state in [Fe(CN)6]4-?
|
+2
|
[Fe(CN)6]4-: Fe=+2.
|
Fe(II)
|
+2=II.
| null | null |
Expert
|
5,462 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.01s^-1?
|
69.3s
|
t1/2=0.693/0.01=69.3s.
|
~70s
|
t1/2≈0.7/0.01=70s.
| null | null |
Hard
|
5,463 |
Inorganic Chemistry
|
Oxidation States
|
Co ox.state in [Co(NH3)6]3+?
|
+3
|
[Co(NH3)6]3+: Co=+3.
|
Co(III)
|
+3=III.
| null | null |
Expert
|
5,464 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
5,465 |
Inorganic Chemistry
|
Oxidation States
|
Co ox.state in [Co(NH3)6]3+?
|
+3
|
[Co(NH3)6]3+: Co=+3.
|
Co(III)
|
+3=III.
| null | null |
Expert
|
5,466 |
Inorganic Chemistry
|
Oxidation States
|
Co ox.state in [Co(NH3)6]3+?
|
+3
|
[Co(NH3)6]3+: Co=+3.
|
Co(III)
|
+3=III.
| null | null |
Expert
|
5,467 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
5,468 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
5,469 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.05s^-1?
|
13.9s
|
t1/2=0.693/0.05=13.9s.
|
~14s
|
t1/2≈0.7/0.05=14s.
| null | null |
Hard
|
5,470 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.01s^-1?
|
69.3s
|
t1/2=0.693/0.01=69.3s.
|
~70s
|
t1/2≈0.7/0.01=70s.
| null | null |
Hard
|
5,471 |
Inorganic Chemistry
|
Oxidation States
|
Fe ox.state in [Fe(CN)6]4-?
|
+2
|
[Fe(CN)6]4-: Fe=+2.
|
Fe(II)
|
+2=II.
| null | null |
Expert
|
5,472 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
5,473 |
Organic Chemistry
|
Alkenes
|
HBr+2-methylpropene product?
|
unknown
|
HBr adds; yields unknown.
|
unknown
|
Same: unknown.
| null | null |
Hard
|
5,474 |
Inorganic Chemistry
|
Oxidation States
|
Co ox.state in [Co(NH3)6]3+?
|
+3
|
[Co(NH3)6]3+: Co=+3.
|
Co(III)
|
+3=III.
| null | null |
Expert
|
5,475 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
5,476 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.05s^-1?
|
13.9s
|
t1/2=0.693/0.05=13.9s.
|
~14s
|
t1/2≈0.7/0.05=14s.
| null | null |
Hard
|
5,477 |
Inorganic Chemistry
|
Oxidation States
|
Co ox.state in [Co(NH3)6]3+?
|
+3
|
[Co(NH3)6]3+: Co=+3.
|
Co(III)
|
+3=III.
| null | null |
Expert
|
5,478 |
Inorganic Chemistry
|
Oxidation States
|
Co ox.state in [Co(NH3)6]3+?
|
+3
|
[Co(NH3)6]3+: Co=+3.
|
Co(III)
|
+3=III.
| null | null |
Expert
|
5,479 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.1s^-1?
|
6.9s
|
t1/2=0.693/0.1=6.9s.
|
~7s
|
t1/2≈0.7/0.1=7s.
| null | null |
Hard
|
5,480 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
5,481 |
Inorganic Chemistry
|
Oxidation States
|
Co ox.state in [Co(NH3)6]3+?
|
+3
|
[Co(NH3)6]3+: Co=+3.
|
Co(III)
|
+3=III.
| null | null |
Expert
|
5,482 |
Organic Chemistry
|
Alkenes
|
HBr+2-methylpropene product?
|
unknown
|
HBr adds; yields unknown.
|
unknown
|
Same: unknown.
| null | null |
Hard
|
5,483 |
Inorganic Chemistry
|
Oxidation States
|
Co ox.state in [Co(NH3)6]3+?
|
+3
|
[Co(NH3)6]3+: Co=+3.
|
Co(III)
|
+3=III.
| null | null |
Expert
|
5,484 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.05s^-1?
|
13.9s
|
t1/2=0.693/0.05=13.9s.
|
~14s
|
t1/2≈0.7/0.05=14s.
| null | null |
Hard
|
5,485 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.05s^-1?
|
13.9s
|
t1/2=0.693/0.05=13.9s.
|
~14s
|
t1/2≈0.7/0.05=14s.
| null | null |
Hard
|
5,486 |
Inorganic Chemistry
|
Oxidation States
|
Fe ox.state in [Fe(CN)6]4-?
|
+2
|
[Fe(CN)6]4-: Fe=+2.
|
Fe(II)
|
+2=II.
| null | null |
Expert
|
5,487 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.01s^-1?
|
69.3s
|
t1/2=0.693/0.01=69.3s.
|
~70s
|
t1/2≈0.7/0.01=70s.
| null | null |
Hard
|
5,488 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.1s^-1?
|
6.9s
|
t1/2=0.693/0.1=6.9s.
|
~7s
|
t1/2≈0.7/0.1=7s.
| null | null |
Hard
|
5,489 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
5,490 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.05s^-1?
|
13.9s
|
t1/2=0.693/0.05=13.9s.
|
~14s
|
t1/2≈0.7/0.05=14s.
| null | null |
Hard
|
5,491 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.01s^-1?
|
69.3s
|
t1/2=0.693/0.01=69.3s.
|
~70s
|
t1/2≈0.7/0.01=70s.
| null | null |
Hard
|
5,492 |
Inorganic Chemistry
|
Oxidation States
|
Co ox.state in [Co(NH3)6]3+?
|
+3
|
[Co(NH3)6]3+: Co=+3.
|
Co(III)
|
+3=III.
| null | null |
Expert
|
5,493 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.1s^-1?
|
6.9s
|
t1/2=0.693/0.1=6.9s.
|
~7s
|
t1/2≈0.7/0.1=7s.
| null | null |
Hard
|
5,494 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
5,495 |
Organic Chemistry
|
Alkenes
|
HBr+2-methylpropene product?
|
unknown
|
HBr adds; yields unknown.
|
unknown
|
Same: unknown.
| null | null |
Hard
|
5,496 |
Physical Chemistry
|
Kinetics
|
t1/2,k=0.05s^-1?
|
13.9s
|
t1/2=0.693/0.05=13.9s.
|
~14s
|
t1/2≈0.7/0.05=14s.
| null | null |
Hard
|
5,497 |
Organic Chemistry
|
Alkenes
|
HCl+2-methylpropene product?
|
2-chloro-2-methylpropane
|
HCl adds; yields 2-chloro-2-methylpropane.
|
tert-butyl chloride
|
Same: tert-butyl chloride.
| null | null |
Hard
|
5,498 |
Inorganic Chemistry
|
Oxidation States
|
Co ox.state in [Co(NH3)6]3+?
|
+3
|
[Co(NH3)6]3+: Co=+3.
|
Co(III)
|
+3=III.
| null | null |
Expert
|
5,499 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
5,500 |
Inorganic Chemistry
|
Oxidation States
|
Co ox.state in [Co(NH3)6]3+?
|
+3
|
[Co(NH3)6]3+: Co=+3.
|
Co(III)
|
+3=III.
| null | null |
Expert
|