STANDARDChemistry-Thermodynamics
STANDARD Chemistry Entropy MCQ Question
Type: MCQ-conceptual-Medium-Class 11
The entropy change can be calculated by using the expression, ΔS = -q_rev/T. When water freezes in a glass beaker, choose the correct statement amongst the following.
A
S_system decreases but ΔS_surroundings remains the same
B
S_system increases but ΔS_surroundings decreases
C
S_system decreases but ΔS_surroundings increases
D
S_system decreases and ΔS_surroundings also decreases
Correct Answer
Option C
Detailed Explanation
As water freezes from liquid to solid, randomness decreases, i.e., ΔS_system decreases. Heat released during the process is absorbed by the surroundings hence, ΔS_surroundings increases.
Found an issue with this question?