ExamGOAL
Books
PreviousNext
12
MCQ (Single Correct Answer)

In which of the following solvents is silver chloride most soluble?

A
$0.1 \mathrm{~mol} \mathrm{~dm}^{-3} \mathrm{AgNO}_3$ solution
B
$0.1 \mathrm{~mol} \mathrm{~dm}^{-3} \mathrm{HCl}$ solution
C
$\mathrm{H}_2 \mathrm{O}$
D
Aqueous ammonia
13
MCQ (Single Correct Answer)

What will be the value of pH of $0.01 \mathrm{~mol} \mathrm{dm}^{-3} \mathrm{CH}_3 \mathrm{COOH}$ $\left(K_a=1.74 \times 10^{-5}\right) ?$

A
3.4
B
3.6
C
3.9
D
3.0
14
MCQ (Single Correct Answer)

$\mathrm{K}_{\mathrm{a}}$ for $\mathrm{CH}_3 \mathrm{COOH}$ is $1.8 \times 10^{-5}$ and $\mathrm{K}_{\mathrm{b}}$ for $\mathrm{NH}_4 \mathrm{OH}$ is $1.8 \times 10^{-5}$. The pH of ammonium acetate will be

A
7.005
B
4.75
C
7.0
D
Between 6 and 7
15
MCQ (Single Correct Answer)

Which of the following options will be correct for the stage of half completion of the reaction $\mathrm{A} \rightleftharpoons \mathrm{B}$ ?

A
$\Delta G^{\ominus}=0$
B
$\Delta G^{\ominus}>0$
C
$\Delta \mathrm{G}^{\ominus}<0$
D
$\Delta G^{\ominus}=-R T \ln K$
16
MCQ (Single Correct Answer)

On increasing the pressure, in which direction will the gas phase reaction proceed to re-establish equilibrium, is predicted by applying the Le-Chatelier's principle. Consider the reaction,

$$\mathrm{N}_2(\mathrm{~g})+3 \mathrm{H}_2(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NH}_3(\mathrm{~g})$$

Which of the following is correct, if the total pressure at which the equilibrium is established, is increased without changing the temperature?

A
$K$ will remain same
B
$K$ will decrease
C
$K$ will increase
D
$K$ will increase initially and decrease when pressure is very high
PreviousNext