The rate law equation for a reaction is $R = k[x][y]$. The rate of reaction doubles when:

  • A
    concentration of $x$ is kept constant and concentration of $y$ is halved
  • B
    concentration of both $x$ and $y$ is doubled
  • C
    concentration of $x$ is doubled and concentration of $y$ is kept constant
  • D
    concentration of $y$ is doubled and concentration of $x$ is halved

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For the reaction $A + 2B \rightleftharpoons 2C + D$,if the concentration of $A$ is increased four times and the concentration of $B$ is reduced to half,the rate of the reaction will be:

Which of the following statements is true regarding the order of a reaction?

The experimental data for the reaction $2A + B_2 \to 2AB$ is given below. Determine the rate equation for the reaction.
$Exp.$ $[A]_0$ $[B_2]_0$ $Rate \ (mol \ L^{-1} \ s^{-1})$
$(1)$ $0.50$ $0.50$ $1.6 \times 10^{-4}$
$(2)$ $0.50$ $1.00$ $3.2 \times 10^{-4}$
$(3)$ $1.00$ $1.00$ $3.2 \times 10^{-4}$

What is the molecularity of the following reactions?
$1.$ $NH_4NO_2(s) \rightarrow N_2(g) + 2H_2O(l)$
$2.$ $2HI(g) \rightarrow H_2(g) + I_2(g)$
$3.$ $2NO(g) + O_2(g) \rightarrow 2NO_2(g)$

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For the reaction $AB_5 \to AB + 4B$,if $- \frac{d[AB_5]}{dt} = K_1[AB_5]$ and $\frac{d[B]}{dt} = K_2[AB_5]$,then:

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