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 |
|---|---|---|---|---|---|---|---|---|---|---|
4,101 |
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
|
4,102 |
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
|
4,103 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
4,104 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
4,105 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
4,106 |
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
|
4,107 |
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
|
4,108 |
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
|
4,109 |
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
|
4,110 |
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
|
4,111 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
4,112 |
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
|
4,113 |
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
|
4,114 |
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
|
4,115 |
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
|
4,116 |
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
|
4,117 |
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
|
4,118 |
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
|
4,119 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
4,120 |
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
|
4,121 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
4,122 |
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
|
4,123 |
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
|
4,124 |
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
|
4,125 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
4,126 |
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
|
4,127 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
4,128 |
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
|
4,129 |
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
|
4,130 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
4,131 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
4,132 |
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
|
4,133 |
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
|
4,134 |
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
|
4,135 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
4,136 |
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
|
4,137 |
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
|
4,138 |
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
|
4,139 |
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
|
4,140 |
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
|
4,141 |
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
|
4,142 |
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
|
4,143 |
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
|
4,144 |
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
|
4,145 |
Organic Chemistry
|
Alkenes
|
HCl+1-butene product?
|
unknown
|
HCl adds; yields unknown.
|
unknown
|
Same: unknown.
| null | null |
Hard
|
4,146 |
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
|
4,147 |
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
|
4,148 |
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
|
4,149 |
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
|
4,150 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
4,151 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
4,152 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
4,153 |
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
|
4,154 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
4,155 |
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
|
4,156 |
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
|
4,157 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
4,158 |
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
|
4,159 |
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
|
4,160 |
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
|
4,161 |
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
|
4,162 |
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
|
4,163 |
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
|
4,164 |
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
|
4,165 |
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
|
4,166 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
4,167 |
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
|
4,168 |
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
|
4,169 |
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
|
4,170 |
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
|
4,171 |
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
|
4,172 |
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
|
4,173 |
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
|
4,174 |
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
|
4,175 |
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
|
4,176 |
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
|
4,177 |
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
|
4,178 |
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
|
4,179 |
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
|
4,180 |
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
|
4,181 |
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
|
4,182 |
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
|
4,183 |
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
|
4,184 |
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
|
4,185 |
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
|
4,186 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
4,187 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
4,188 |
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
|
4,189 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
4,190 |
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
|
4,191 |
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
|
4,192 |
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
|
4,193 |
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
|
4,194 |
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
|
4,195 |
Organic Chemistry
|
Nomenclature
|
Name CH3CH(OH)CH2CHO?
|
3-hydroxybutanal
|
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
|
beta-hydroxybutyraldehyde
|
3-hydroxybutanal=beta-hydroxybutyraldehyde.
| null | null |
Hard
|
4,196 |
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
|
4,197 |
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
|
4,198 |
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
|
4,199 |
Organic Chemistry
|
Alkenes
|
HCl+1-butene product?
|
unknown
|
HCl adds; yields unknown.
|
unknown
|
Same: unknown.
| null | null |
Hard
|
4,200 |
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
|