Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
0 votes

Consider the reaction ,$2A +B \to products$ when concentration of B alone was doubled , the half -life did not change . When the concentration of A alone was doubled, the rate increased by two times. The unit of rate constant for this reaction is :

$(a)\;L\; mol^{-1}S^{-1} \\ (b)\;\text{No unit} \\(c)\;mol\;L^{-1}\;S^{-1} \\(d)\;S^{-1}$
Can you answer this question?

1 Answer

0 votes
$2A+B \to product$
when concentration of B is doubled, the half- life did not change , hence reaction is of first order w.r.t B.
when concentration of A is doubled, reaction rate is doubled.
Hence reaction is first order with respect to A.
Hence overall order of reaction is $1+1=2$
So, unit of rate constant is $mol^{-1}\;litres$
Hence a is the correct answer.
answered Apr 2, 2014 by meena.p

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App