The number of incorrect statement/s from the following is

A. The successive half lives of zero order reactions decreases with time.

B. A substance appearing as reactant in the chemical equation may

Question

The number of incorrect statement/s from the following is

A. The successive half lives of zero order reactions decreases with time.

B. A substance appearing as reactant in the chemical equation may not affect the rate of reaction.

C. Order and molecularity of a chemical reaction can be a fractional number.

D. The rate constant units of zero and second order reaction are  and  respectively.

Canvas Classes · Accepted Answer

A. TRUE — For zero order: . As the reaction proceeds,  for each successive half-life decreases, so successive half-lives decrease. ✓

B. TRUE — A substance may appear in the balanced equation but if it is a solvent or in large excess, it may not appear in the rate law (pseudo-order reactions). ✓

C. FALSE — Molecularity is always a whole number (it represents the number of molecules colliding). Order can be fractional, but molecularity cannot. ✗

D. TRUE — Zero order: ; Second order: . ✓

Number

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