For a given reaction ${t_{1/2}} = \frac{1}{{Ka}}.$. The order of the reaction is

The reaction $2NO + Br_2 \rightarrow  2NOBr,$ follows the mechanism given below

$(I)$  $NO + Br_2 \rightleftharpoons  NOBr_2 $    ........ Fast

$(II)$  $NOBr_2 + NO \rightarrow 2NOBr$     ......... Slow

The overall order of this reaction is

Consider the following gas-phase reaction.
$2HI(g) \longrightarrow H_2(g) + I_2(g)$
and the following experimental data obtained at $555\, K$, What is the order of the reaction with respect to $HI$ $(g)$ ?

For the following reaction: $NO_2(g) + CO(g) \to NO(g) + CO_2(g)$, the rate law is: Rate $= k \,[NO_2]^2$. If $0.1\,mole$ of gaseous carbon monoxide is added at constant temperature to the reaction mixture which of the following statements is true?

For the hypothetical reaction $2X + G \to Q + 2M$ , the rate expression is $\frac{{d\left[ Q \right]}}{{dt}} = k{\left[ X \right]^2}$ . Which of the following is the most likely mechanism ?

Reaction : $KCl{O_3} + 6FeS{O_4} + 3{H_2}S{O_4} \to $ $KCl + 3F{e_2}{\left( {S{O_4}} \right)_3} + 3{H_2}O$

Which is True $(T)$ and False $(F)$ in the following sentence ?

The order of this reaction is $1$.