For a reaction X + Y → Z, rate propto [X]. What is (i) molecularity and (ii) order of reaction?

Question

For a reaction X + Y → Z, rate propto [X]. What is (i) molecularity and (ii) order of reaction? (A) (i) 2, (ii) 1 (B) (i) 2, (ii) 2 (C) (i) 1, (ii) 1 (D) (i) 1, (ii) 2

Tardigrade Admin · Accepted Answer

Molecularity is the number of molecules that come together to react in an elementary (single-step) reaction and is equal to the sum of stoichiometric coefficients of reactants in this elementary reaction.
Two molecules,

X

and

Y

are taking part in this reaction so the molecularity of the reaction is

2.

Order of reaction is given by the rate law, power of

X

is 1 in the rate law, so the order of the reaction is

1.

Q. For a reaction $X + Y \to Z$ , rate $\propto [X]$ . What is $(i)$ molecularity and $(ii)$ order of reaction?

$(i) 2$ , $(ii) 1$

$(i) 2$ , $(ii) 2$

$(i) 1$ , $(ii) 1$

$(i) 1$ , $(ii) 2$

Q. For a reaction X+Y→Z, rate ∝[X]. What is (i) molecularity and (ii) order of reaction?

(i)2, (ii)1

(i)2, (ii)2

(i)1, (ii)1

(i)1, (ii)2

Q. For a reaction $X + Y \to Z$ , rate $\propto [X]$ . What is $(i)$ molecularity and $(ii)$ order of reaction?

$(i) 2$ , $(ii) 1$

$(i) 2$ , $(ii) 2$

$(i) 1$ , $(ii) 1$

$(i) 1$ , $(ii) 2$