Question 1 :
The reaction of ${ O }_{ 3 }$ with chlorine atom is given as:<br/>${ O }_{ 3 }\left( g \right) +Cl\left( g \right) \longrightarrow { O }_{ 2 }\left( g \right) +ClO\left( g \right) ;$               ${ k }_{ 1 }=5.2\times { 10 }^{ 9 }\ L\ { mol }^{ -1 }{ sec }^{ -1 }$<br/>$ClO\left( g \right) +O\left( g \right) \longrightarrow Cl\left( g \right) +{ O }_{ 2 }\left( g \right) ;$                 ${ k }_{ 2 }=2.6\times { 10 }^{ 10 }\ L \ { mol }^{ -1 }{ sec }^{ -1 }$<br/>Which of these values is closest to the rate constant of the overall reaction?<br/>${ O }_{ 3 }\left( g \right) +O\left( g \right) \longrightarrow 2{ O }_{ 2 }\left( g \right) $
Question 2 :
The order of a reaction is said to be $2$ with respect to a reactant $X$ when:
Question 3 :
In which of the following reactions of the following orders the molecularity and order can never be same?
Question 5 :
The reaction $A(s) \rightarrow 2B(g) + C(g) $ is first order. The pressure after $20$ min. and after a very long time are $150$ mm $Hg$ and $225$ mm $Hg$. The value of rate constant and pressure after $40$ min. are?
Question 6 :
Which of the following will not shift the equilibrium, {tex} \mathrm { N } _ { 2 } + 3 \mathrm { H } _ { 2 } \rightleftharpoons 2 \mathrm { NH } _ { 3 } {/tex} towards product side
Question 8 :
5 mL of 0.4 N NaOH is mixed with 20 mL of 0.1 N HCl. The pH of the resulting solution will be
Question 9 :
The solubility product of {tex} \mathrm { Ag } _ { 2 } \mathrm { CrO } _ { 4 } {/tex} is {tex} 32 \times 10 ^ { - 12 } {/tex}. What is the concentration of {tex} \mathrm { CrO } _ { 4 } ^ { 2 - } {/tex} ions in that solution in {tex} \left( \mathrm { g } \mathrm { L } ^ { - 1 } \right) {/tex}
Question 10 :
One mole of ${ A }_{ \left( g \right)  }$ is heated to $300 ^{0}C$ in a closed one litre vessel till the following equilibrium is reached. ${ A }_{ \left( g \right)  }\Longleftrightarrow { B }_{ \left( g \right)  }$. The equilibrium constant of the reaction at $300^{0} C$ is $4$. What is the conc. of $B\ (in\ mole.\ { lit }^{ -1 })$ at equilibrium?
Question 11 :
The reaction,<br/>${ C }_{ 2 }{ H }_{ 4 }(g)+{ H }_{ 2 }(g)\rightleftharpoons { C }_{ 2 }{ H }_{ 6 }(g);\Delta H=-32.7kcal$ is carried out in a vessel. The equilibrium concentration of ${C}_{2}{H}_{4}$ can be increased by:
Question 12 :
At $25^o$C, the equilibrium constants $K_1, K_2$ and $K_3$ of three reactions are:<br/>$N_2+3H_2\rightleftharpoons 2NH_3; \ \ K_1$<br/>$N_2+O_2\rightleftharpoons 2NO; \ \ K_2$<br/>$H_2+\dfrac{1}{2}O_2\rightleftharpoons H_2O; \ \ K_3$<br/>The equilibrium constants for the oxidation of $NH_3$ by oxygen to given $NO$ is:<br/>
Question 13 :
A vessel contains $N_2O_4$ & $NO_2$ in 2:3 molar ratio at 10 atm under equilibrium. now $K_p$ for $N_2O_4 \rightleftharpoons 2NO_2$ is:
Question 14 :
$a$ moles of $P{Cl}_{5}$ is heated in a closed container to equilibriate $P{ Cl }_{ 5(g) }\rightleftharpoons P{ Cl }_{ 3(g) }+{ Cl }_{ 2(g) }$ at a pressure of $P$ atm. If $x$ moles of $P{Cl}_{5}$ dissociate at equilibrium, then:
Question 15 :
When sodium acetate is added to acetic acid, the degree of dissociation of acetic acid:
Question 16 :
Equilibrium constant for an equilibrium reaction is 100. Its forward reaction rate constant $K_{f} = 10^5$. Its backward reaction rate constant $K_{b}$ is;<br/>
Question 17 :
In the reaction, $PCl_5\rightleftharpoons PCl_3+Cl_2$, the amount of $PCl_5, PCl_3$ and $PCl_2$ at equilibrium are $2$ moles each and the total pressure is $3$ atm. The equilibrium constant $K_p$ is:
Question 19 :
An inert gas is added to the following equilibrium, $A(s)+2B(g)\rightleftharpoons 3C(g)$ at constant pressure. The equilibrium
Question 20 :
The value of of ${ K }_{ P }$ for dissociation ; $2HI\rightleftharpoons { H }_{ 2 }+{ I }_{ 2 }$ is  $1.84{ \times 10 }^{ -2 }$. If the equilibrium concentration of $ { H }_{ 2 }$ is $0.4789$ mole ${ { L }^{ -1 } }$, calculate the concentration of $HI$ at equilibrium.
Question 21 :
Consider the reactions<br/>(i) $PCl_{5}(g) \rightleftharpoons  PCl_{3}(g) + Cl_{2}(g)$<br/>(ii) $N_{2}O_{4}(g) \rightleftharpoons  2NO_{2}(g)$<br/>The addition of an inert gas at constant volume_____________.<br/><br/><br/>
