Solveeit Logo
Login

Question

Chemistry Question on Spontaneity

Predict in which of the following entropy decreases.

A

A liquid crystallizes into a solid

B

Temperature of a crystalline solid is raised from 0 K to 115 K

C

2NaHCO3(s)→Na2CO3(s)+CO2(g)+H2O(g)2NaHCO_{3} (s) \to Na_{2}CO_{3} (s)+ CO_2(g)+H_2O(g)

D

H2→2H(g)H_{2} \to2H_{(g)}

Answer

A liquid crystallizes into a solid

Explanation

Solution

After freezing, the molecules attain an ordered state and therefore, entropy decreases. In rest of the cases entropy increases