Chemistry-Hess's Law
NEET Chemistry Hess's Law MCQ Question
Type: MCQ-fact-Easy-Class 11
What happens to the value of ∆ r H when a chemical equation is reversed?
A
It is reversed in sign.
B
It remains unchanged.
C
It becomes zero.
D
It is doubled.
Correct Answer
Option A
Detailed Explanation
According to Hess's Law, when a chemical equation is reversed, the value of ∆ r H is reversed in sign, as stated in the NCERT context.
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