Chemistry-Hess's Law
NEET Chemistry Hess's Law MCQ Question
Type: MCQ-fact-Medium-Class 11
What happens to the value of ∆rH° when a chemical equation is reversed?
A
It is reversed in sign.
B
It remains unchanged.
C
It increases by a constant value.
D
It becomes zero.
Correct Answer
Option A
Detailed Explanation
When a chemical equation is reversed, the value of ∆rH° is reversed in sign, as stated in the context provided.
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