For a reaction A+2 B arrow Products, when concentration of B alone is increased half life remains the same. If concentration of A alone is doubled, rate remains the same. The unit of rate constant for the reaction is

Question

For a reaction A+2 B arrow Products, when concentration of B alone is increased half life remains the same. If concentration of A alone is doubled, rate remains the same. The unit of rate constant for the reaction is (A) S -1 (B) L mol -1 S -1 (C) mol L-1 S-1 (D) atm -1

Tardigrade Admin · Accepted Answer

For first-order reaction, half-life t 1 / 2=(0.693/ k ) Since half-life does not depend on the concentration of reactants. According to the given data, the order of reaction with respect to B is one, hence, does not change half-life. Similarly, an order of reaction with respect to A is also one since the rate increase twice on doubling the concentration. Hence, total order =1+1=2 Second order reaction and its unit is Lmol -1 s -1.

Q. For a reaction $A + 2 B \to$ Products, when concentration of $B$ alone is increased half life remains the same. If concentration of $A$ alone is doubled, rate remains the same. The unit of rate constant for the reaction is

$S^{- 1}$

$L m o l^{- 1} S^{- 1}$

mol $L^{- 1} S^{- 1}$

$a t m^{- 1}$

Q. For a reaction A+2B→ Products, when concentration of B alone is increased half life remains the same. If concentration of A alone is doubled, rate remains the same. The unit of rate constant for the reaction is

S−1

Lmol−1S−1

mol L−1S−1

atm−1

Q. For a reaction $A + 2 B \to$ Products, when concentration of $B$ alone is increased half life remains the same. If concentration of $A$ alone is doubled, rate remains the same. The unit of rate constant for the reaction is

$S^{- 1}$

$L m o l^{- 1} S^{- 1}$

mol $L^{- 1} S^{- 1}$

$a t m^{- 1}$