In the reaction $A + B \to $ Products, if $B$ is taken in excess, then it is an example of

  • A

    Second order reaction

  • B

    Zero order reaction

  • C

    Pseudounimolecular reaction

  • D

    First order reaction

Similar Questions

If $‘a’ $ is the initial concentration and $ ‘n’ $ is the order of the reaction and the half life period is $ ‘T’,$  then

When a reaction is progressing

$2 NO +2 H _{2} \rightarrow N _{2}+2 H _{2} O$

The above reaction has been studied at $800^{\circ} C$. The related data are given in the table below.

Reaction serial number Initial pressure of $H _{2}$ / $kPa$ Initial Pressure of $NO /$ $kPa$ Initial rate $\left(\frac{- dp }{ dt }\right) /( kPa / s )$
$1$ $65.6$ $40.0$ $0.135$
$2$ $65.6$ $20.1$ $0.033$
$3$ $38.6$ $65.6$ $0.214$
$4$ $19.2$ $65.6$ $0.106$

 The order of the reaction with respect to $NO$ is $...........$ 

  • [JEE MAIN 2022]

In the reaction $2A + B \to {A_2}B$, if the concentration of $A$ is doubled and of $B$ is halved, then the rate of the reaction will

  • [AIPMT 2000]

For reaction

$Cl_2(aq) + H_2S(aq) \to S(s) + 2H^+(aq) + 2Cl^-(aq)$ rate law is $r = K[Cl_2][H_2S]$
then which of these mechanism is/are consistent with this rate law

$(A)\, H_2S \rightleftharpoons  H^+ + HS^-$ (fast)

         $Cl_2 + HS^-\to 2Cl^-+ H^+ + S$ (slow)

$(B)\, Cl_2 + H_2S \to H^+ + Cl^-+ Cl^+ + HS^-$ (slow)

          $Cl^+ + HS^-\to H^+ + Cl^-+ S$ (fast)