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 |
|---|---|---|---|---|---|---|---|---|---|---|
8,701 |
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
|
8,702 |
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
|
8,703 |
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
|
8,704 |
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
|
8,705 |
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
|
8,706 |
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
|
8,707 |
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
|
8,708 |
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
|
8,709 |
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
|
8,710 |
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
|
8,711 |
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
|
8,712 |
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
|
8,713 |
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
|
8,714 |
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
|
8,715 |
Organic Chemistry
|
Alkenes
|
HCl+1-methylcyclohexene product?
|
unknown
|
HCl adds; yields unknown.
|
unknown
|
Same: unknown.
| null | null |
Hard
|
8,716 |
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
|
8,717 |
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
|
8,718 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
8,719 |
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
|
8,720 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
8,721 |
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
|
8,722 |
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
|
8,723 |
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
|
8,724 |
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
|
8,725 |
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
|
8,726 |
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
|
8,727 |
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
|
8,728 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
8,729 |
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
|
8,730 |
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
|
8,731 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
8,732 |
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
|
8,733 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
8,734 |
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
|
8,735 |
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
|
8,736 |
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
|
8,737 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
8,738 |
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
|
8,739 |
Organic Chemistry
|
Alkenes
|
HCl+1-methylcyclohexene product?
|
unknown
|
HCl adds; yields unknown.
|
unknown
|
Same: unknown.
| null | null |
Hard
|
8,740 |
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
|
8,741 |
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
|
8,742 |
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
|
8,743 |
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
|
8,744 |
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
|
8,745 |
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
|
8,746 |
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
|
8,747 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
8,748 |
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
|
8,749 |
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
|
8,750 |
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
|
8,751 |
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
|
8,752 |
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
|
8,753 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
8,754 |
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
|
8,755 |
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
|
8,756 |
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
|
8,757 |
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
|
8,758 |
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
|
8,759 |
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
|
8,760 |
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
|
8,761 |
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
|
8,762 |
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
|
8,763 |
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
|
8,764 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
8,765 |
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
|
8,766 |
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
|
8,767 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
8,768 |
Organic Chemistry
|
Alkenes
|
HBr+1-butene product?
|
2-bromobutane
|
HBr adds; yields 2-bromobutane.
|
sec-butyl bromide
|
Same: sec-butyl bromide.
| null | null |
Hard
|
8,769 |
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
|
8,770 |
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
|
8,771 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
8,772 |
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
|
8,773 |
Organic Chemistry
|
Alkenes
|
HCl+1-methylcyclohexene product?
|
unknown
|
HCl adds; yields unknown.
|
unknown
|
Same: unknown.
| null | null |
Hard
|
8,774 |
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
|
8,775 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
8,776 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
8,777 |
Organic Chemistry
|
Alkenes
|
HCl+1-butene product?
|
unknown
|
HCl adds; yields unknown.
|
unknown
|
Same: unknown.
| null | null |
Hard
|
8,778 |
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
|
8,779 |
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
|
8,780 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
8,781 |
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
|
8,782 |
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
|
8,783 |
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
|
8,784 |
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
|
8,785 |
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
|
8,786 |
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
|
8,787 |
Organic Chemistry
|
Alkenes
|
HCl+1-butene product?
|
unknown
|
HCl adds; yields unknown.
|
unknown
|
Same: unknown.
| null | null |
Hard
|
8,788 |
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
|
8,789 |
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
|
8,790 |
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
|
8,791 |
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
|
8,792 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
8,793 |
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
|
8,794 |
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
|
8,795 |
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
|
8,796 |
Organic Chemistry
|
Alkenes
|
HBr+1-butene product?
|
2-bromobutane
|
HBr adds; yields 2-bromobutane.
|
sec-butyl bromide
|
Same: sec-butyl bromide.
| null | null |
Hard
|
8,797 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
8,798 |
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
|
8,799 |
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
|
8,800 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|