Q. For the reaction 2A + B → 3C + D which of the following does not express the reaction rate ?
A) −d[C]/3dt
B) −d[B]/dt
C) d[D]/dt
D) −d[A]/2dt
Explanation
[Solution from source] Rate = −½ d[A]/dt = −d[B]/dt = +⅓ d[C]/dt = +d[D]/dt. Since C is a product its concentration rises, so −d[C]/3dt is negative and cannot represent the rate. The other three expressions are correct. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.