Question

Which statement is correct?

The reaction that results in an increase in the number of moles of gas always decreases the entropy of a system.

The solution process usually leads to an increase in entropy.

An increase in the temperature decreases all types of molecular motions.

Heating always decreases the entropy of a system.

Answer 1

The reaction that results in an increase in the number of moles of gas always decreases the entropy of a system. --> FALSE, since chaos is generated

The solution process usually leads to an increase in entropy. --> TRUE, solution is chaos generation since NaCl crystals will be disordered in Na and Cl ions everywhere

An increase in the temperature decreases all types of molecular motions. --> FALSE, T increases motion since it is associated to the kinetic movement

Heating always decreases the entropy of a system. --> FALSE not always, actually heating many times increases chaos since it is associated with Temperature, or kinetic order S = Q/T