Answer to Question #326728 in General Chemistry for Justin

Question

1. Which is not true about entropy? *

A. It is denoted by the symbol S

B. It is a measure of the randomness or disorder of a system.

C. It is a measure of how much energy is unavailable for conversion into work.

D. A positive value of a change in entropy indicates that the final state is less random than the initial state.

2. What happens to water molecules when cooled? *

A. The forces between molecules break.

B. The water molecules become excited.

C. The water molecules slide past each other.

D. The water molecules become fixed in position.

3. Which of these is a reason why surface area of reactants is increased? *

A. To stabilize the reaction

B. To speed up the reaction

C. To prevent a compound from forming

D. To produce lesser amount of products

4. Which of these is a reason why surface area of reactants is increased? *

A. To stabilize the reaction

B. To speed up the reaction

C. To prevent a compound from forming

D. To produce lesser amount of products

Answer 1

1. D. A positive value of a change in entropy indicates that the final state is less random than the initial state.
2. D. The water molecules become fixed in position.
3. B. To speed up the reaction
4. B. To speed up the reaction