alleryQ is useful because comparing it with K predicts the reaction's:
ADistortion
BDirection
CDilution
DDispersion
Answer & Solution
Correct answer: B. Direction
1. Q can be worked out at any stage of the reaction.
2. The reaction quotient is useful in predicting the direction of reaction by comparing Q and K.
3. So the correct answer is direction.
_Source: syllabus Chemistry, Ch 7 'Equilibrium'_
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