AP EAPCET 2025 - 27th May Morning Shift | Ionic Equilibrium Question 1 | Chemistry

At $T(\mathrm{~K}) K_{\mathrm{sp}}$ of two ionic salts $M X_2$ and $M X$ is $5 \times 10^{-13}$ and $1.6 \times 10^{-11}$ respectively. The ratio of molar solubility of $M X_2$ and $M X$ is

12.5

1.25

6.25

7.50

AP EAPCET 2025 - 26th May Evening Shift

MCQ (Single Correct Answer)

-0

The molar solubility of $\mathrm{PbI}_2$ in $0.2 \mathrm{MPb}\left(\mathrm{NO}_3\right)_2$ solution in terms of $K_{s p}$ (solubility product) is

$\left(\frac{K_{s p}}{0.2}\right)^{1 / 2}$

$\left(\frac{K_{s p}}{0.4}\right)^{1 / 4}$

$\left(\frac{K_{s p}}{0.8}\right)^{1 / 2}$

$\left(\frac{K_{s p}}{0.8}\right)^{1 / 3}$

AP EAPCET 2025 - 23rd May Evening Shift

MCQ (Single Correct Answer)

-0

The percentage of ionisation of 1 L of $x \mathrm{M}$ acetic acid is 4.242 and is called solution " $A$ ". The percentage of ionisation of 1 L of $y \mathrm{M}$ acetic acid is 3 and is called solution " $B$ ". Solution " $A$ " is mixed with solution " $B$ ". What is the concentration of acetic acid in the resultant solution? ( $K_{\mathrm{a}}$ of acetic acid $=1.8 \times 10^{-5}$ )

0.05 M

0.015 M

0.02 M

0.15 M

AP EAPCET 2025 - 23rd May Morning Shift

MCQ (Single Correct Answer)

-0

When 30 mL of $0.2 \mathrm{M} \mathrm{NH}_4 \mathrm{OH}$ is added to 30 mL of $2 \mathrm{M} \mathrm{NH}_4 \mathrm{Cl}$ solution. If the pH of the buffer formed is 8.2, what is the $\mathrm{p} K_b$ of $\mathrm{NH}_4 \mathrm{OH}$ ?

5.8

7.2

6.8

4.8

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