Chemical Equilibrium MCQ Question with Answer

Question No : 15
0.894 moles of $N{H}_3$ is enclosed in a 5-litre container and heated to 620 K. If value of the equilibrium constant for the reaction $2N{H}_3\leftrightharpoons N_2+3H_2$ is 0.0395 at 629 K then concentration of NH3 at equilibrium will be

Question No : 16
On mixing 1 mole of ethyl alcohol with 1 mole of acetic acid at 298 K the equilibrium concentration of ester and water becomes - moles each. If $\frac{2}{3}$ moles of alcohol is mixed with 1 mole of acid, the concentration of ester in moles at equilibrium will be

Question No : 17
The chemical system in equilibrium is not affected by

Question No : 18
 According to the following reactions, which oxide of nitrogen is the most stable at 298 K

Question No : 19
 At 2000 K the reaction $C\left(s\right)+C{O}_2\left(g\right)\leftrightharpoons 2CO\left(g\right)$ is at equilibrium. If the molar concentration of both CO and $C{O}_2$ at 2000 K at equilibrium is 8 moles $li{t}^{-1}$ and 2 moles $li{t}^{-1}$ respectively then equilibrium constant for the reaction will be

Question No : 20
For the reaction $H_2\left(g\right)+I_2\left(g\right)\rightleftharpoons$2HI (g) at 721 K
value of equilibrium constant is 50, when molar concentration of both hydrogen and iodine is 0.5 M at equilibrium value of $K_p$ under the same conditions will be

Question No : 21
The reaction $H_2+I_2\rightleftharpoons$2HI is at equilibrium at 298 K 1 mole of $N_2$gas is introduced in the reaction chamber at constant temperature and constant volume. At this: