Chemical Kinetics - Result Question 8
####8. For the reaction, $2 A+B \rightarrow C$, the values of initial rate at different reactant concentrations are given in the table below. The rate law for the reaction is
(2019 Main, 8 April I)
| $[\boldsymbol{A}]\left(mol L^{-1}\right)$ | $[\boldsymbol{B}]\left(mol L^{-1}\right)$ | Initial rate $\left(mol L^{-1} s^{-1}\right)$ |
|---|---|---|
| 0.05 | 0.05 | 0.045 |
| 0.10 | 0.05 | 0.090 |
| 0.20 | 0.10 | 0.72 |
(a) rate $=k[A][B]^{2}$
(b) rate $=k[A]^{2}[B]^{2}$
(c) rate $=k[A][B]$
(d) rate $=k[A]^{2}[B]$
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Answer:
Correct Answer: 8. $T=\infty$
Solution:
- Let the rate equation be $k[A]^{x}[B]^{y}$
From Ist values,
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