Question

What is the order of a reaction which has a rate expression rate $=k(A{)}^{3/2}(B{)}^{-1}$ ?

• A. 3/2
• B. 1/2
• C. 0
• D. None of these

Answer 1

Answer: (B)

Order of reaction : The total number of molecules or atoms whose concentration determine the rate of reaction is known as order of reaction.
Order of reaction $=$ sum of exponents of the
conc. term in the rate law
rate $=k[A{]}^{\frac{3}{2}}[B{]}^{-1}$
$\therefore$ Order of reaction $=\frac{3}{2}+(-1)$
$=\frac{1}{2}=0.5$