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Standard XII

Chemistry

Zero Order Reaction

For the react...

Question

For the reaction a $A \to x P$ when $[A] = 2.2 m M$ the rate was found to be $2.4 m M s^{- 1}$ . On reducing concentration of A to half, the rate changes to $0.6 m M s^{- 1}$ . The order of reaction with respect to A is:

1.5

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2.5

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Solution

The correct option is B 2
$r a t e = k [A]^{n}$
$2.4 = k (2.2)^{n} - (1)$
Now
$0.6 = k (1.1)^{n} - (2)$
$(1) \div (2)$
$4 = 2^{n}$
only possible when
n = 2

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For the reaction a A→xP when [A]=2.2mM the rate was found to be 2.4mMs−1 . On reducing concentration of A to half, the rate changes to 0.6mMs−1 . The order of reaction with respect to A is:

The correct option is B 2rate=k[A]n2.4=k(2.2)n −(1)Now0.6=k(1.1)n −(2)(1)÷(2)4=2nonly possible whenn = 2

For the reaction a $A \to x P$ when $[A] = 2.2 m M$ the rate was found to be $2.4 m M s^{- 1}$ . On reducing concentration of A to half, the rate changes to $0.6 m M s^{- 1}$ . The order of reaction with respect to A is:

The correct option is B 2
$r a t e = k [A]^{n}$
$2.4 = k (2.2)^{n} - (1)$
Now
$0.6 = k (1.1)^{n} - (2)$
$(1) \div (2)$
$4 = 2^{n}$
only possible when
n = 2