AIPMT PRELIMS2011Chemistry-Thermodynamics
AIPMT PRELIMS 2011 Chemistry Enthalpy Changes MCQ Question
Type: MCQ-conceptual-Medium-Class 11
The value of ΔH for the reaction X₂(g) + 4Y₂(g) ⇌ 2XY₄(g) is less than zero. Formation of XY₄(g) will be favoured at
A
High pressure and low temperature
B
High temperature and high pressure
C
Low pressure and low temperature
D
High temperature and low pressure
Correct Answer
Option A
Detailed Explanation
Since ΔH is negative, the reaction is exothermic and is favored at low temperatures. High pressure favors the formation of fewer gas molecules.
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