# Chemical Equilibrium MCQ Question with Answer

## Chemical Equilibrium MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 8
A chemical reaction $P⇋Q$ is said to be in equilibrium when

Rate of conversion of P to Q is the same as that of Q to P
P and Q are present in equimolar ratio
P has completely changed to Q
35% of P is changed to Q

Question No : 9
Reaction between silver nitrate and sodium chloride goes to completion because

the reaction is instantaneous
silver nitrate is insoluble in water
silver chloride is sparingly soluble in water
solubility of silver nitrate increases with sodium chloride

Question No : 10
For the reaction $2HI⇋{H}_{2}+{I}_{2}$ at 720 K the equilibrium constant value is 50. The equilibrium constant for the reaction ${H}_{2}+{I}_{2}⇋$at the same temperature will be

20
0.56
30
0.02

Question No : 11
At equilibrium the concentration of ${H}_{2},{I}_{2}$ and HI in a reaction chamber kept at 773 K is $\left[{H}_{2}\right]$= 0.42 mole $lite{r}^{-1},\left[{I}_{2}\right]$ = 0.042 mole $lite{r}^{-1};\left[HI\right]$ = 3.52 moles $lite{r}^{-1}$. The value of the equilibrium constant for the reaction ${H}_{2}+{I}_{2}⇋$2HI is

0.712
0.75
71.5
31.5

Question No : 12
If equilibrium constant for the reaction ${N}_{2}+3{H}_{2}⇋2N{H}_{3}$ at 298K is 2.54, the value of equilibrium constant for the reaction will be $d\frac{1}{2}{N}_{2}+\frac{3}{2}{H}_{2}⇋N{H}_{3}$

0.395
5.08
3.18
1.59

Question No : 13
0.5 moles of ${H}_{2}$ and 0.5 moles of ${I}_{2}$ are introduced in the reaction chamber of capacity 10 litre at 271 K. react to give HI and ${K}_{p}$is found to be 50. If total pressure in the reaction chamber is 5.9 atmosphere then partial pressure of hydrogen will be

0.325 atm
3.2 atm
4.6 atm
0.65 atm

Question No : 14
Which of the following is correct ?

${K}_{p}={K}_{c}{\left(RT\right)}^{∆n}$
${K}_{p}.{K}_{c}=\sqrt{RT}$
${K}_{p}={K}_{c}.RT$
${K}_{p}={K}_{c}.\sqrt{∆nRT}$

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