Author Question: Coulomb is the derived SI unit that measures electrical charge. Indicate whether the statement is ... (Read 94 times)

Cooldude101 · **on:** Aug 27, 2018

Coulomb is the derived SI unit that measures electrical charge.

Indicate whether the statement is true or false

Question 2

In the laboratory, endothermic reactions are usually performed at elevated temperatures, while exothermic reactions are usually performed at lower temperatures. Why?

A) Endothermic reactions require the input of energy, which can include the input of thermal energy. Elevated temperatures help minimize unfavorable decrease in entropy due to the heat absorbed by the reaction.
B) For exothermic reactions, the lower temperatures slow the reactive molecules down, which gives the chemist greater control. Also, the heat generated by the reaction is more efficiently dispersed under the colder conditions.
C) Performing endothermic reactions at elevated temperature gives the molecules greater kinetic energy. Also, some exothermic reactions would explode if not run at cold temperatures.
D) All of the above are true.