Tag: factors influencing rate of a reaction
Questions Related to factors influencing rate of a reaction
Rate constant in case of first order reaction is :
Fill in the blanks by choosing the correct option;
Order of the reaction is the $X$ of the powers to which concentration terms are raised in experimentally determined rate equation. The unit of first order rate constant is $Y$. The unit of first order rate constant when concentration is measured in terms of pressure and time in minutes is $Z$.
Match the rate law given in column I with the dimensions of rate constant given in column II and mark the appropriate choice.
Column I | Column II |
---|---|
(A) $Rate = k[NH _{3}]^{0}$ | (i) $mol\ L^{-1} s^{-1}$ |
(B) $Rate = k[H _{2}O _{2}][I^{-}]$ | (ii) $L\ mol^{-1} s^{-1}$ |
(C) $Rate = k[CH _{3}CHO]^{3/2}$ | (iii) $s^{-1}$ |
(D) $Rate = k[C _{2}H _{5}Cl]$ | (iv) $L^{1/2} mol^{-1/2} s^{-1}$ |
For the second order reaction, concentration $(x)$ of the product at time $t$ starting with initial concentration $[A] _0$ is:
Units of rate constant of a first order reaction is :
A gaseous reaction, $A _{2}\left ( g \right )\rightarrow B\left ( g \right )+\frac{1}{2}\left ( g \right )$
Show increase in pressure from 40 mm to 120 mm in 5 minutes. the rate of disappearance of$A _{2}$ is ?
Consider the reaction $2A+B$ $\rightarrow$products,when the concentration of a alone was doubled, the half-life of the reaction did not change.When the concentration of B alone was double,the rate was not altered.The unit of rate constant for this reaction is
For the reaction $A\rightarrow C+D$, the initial concentration of $A$ is $1000 M$. After $10^{2} sec$ concentration of $A$ is $100\ M$. The rate constant of the reaction has the numerical value of $9.0$. What is the unit of the reaction rate constant?
The second order rate constant is usually expressed as :
The unit of rate constant obeying the rate expression, $r=k{ \left[ A \right] }{ \left[ B \right] }^{ { 2 }/{ 3 } }$ is: