Question

The rate law for the reaction, $ 2X+Y\to Z $ is $ Rate=k\,[X][Y]. $ The correct statement with regard to this relation is

• A. the rate of reaction is independent of [X] and [V]
• B. for this reaction $ {{t}_{1/2}} $ is independent of initial concentration of reactants
• C. the unit of $ k $ is $ {{S}^{-1}} $
• D. the rate of formation of Z is half the rate of disappearance of X

Answer 1

Answer: (D)

$ 2X+Y\to Z $ According to equation, 2 moles of X on reaction with 1 mole of Y gives 1 mole of Z. In other words, the rate of formation of Z is half the rate of disappearance of X.