June 2022 Chemistry Regents #21-25
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Questions |
Answer | Links |
Explanations |
| 21 Which statement describes the two isomers of
butane? 1. They have the same molecular formula but different structural formula. 2. They have the same molecular formula and the same structural formula. 3. They have different molecular formula and different structural formula. 4. They have different molecular formula but the same structural formula. |
1 | definition of an isomer | |
| 22 Which term represents an organic reaction that
produces soap? 1. esterification 2. fermentation 3. saponification 4. solidification |
3 | fat + base makes soap and glycerol saponification |
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| 23 In which part of an electrochemical cell does
reduction occur? 1. anode 2. cathode 3. wire 4. voltmeter |
2 | red cat, an ox reduction at the cathode |
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| 24 Which energy change occurs in a operating voltaic
cell? 1. chemical energy to electrical energy 2. chemical energy to nuclear energy 3. electrical energy to chemical energy 4. electrical energy to nuclear energy |
1 | voltaic cells are batteries chemical to electrical |
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| 25 Which substance is an Arrhenius Base? 1. HNO3 2. KNO3 3. LiOH 4. CH3COOH |
3 | Table L, bases generate OH- in water because they have OH formula, not #4 it is an acid | |
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