MHT CET (PCB) 2025 9th April Evening Shift | Ionic Equilibrium Question 1 | Chemistry

What is the value of $\mathrm{pK}_{\mathrm{a}}$ if $0.1 \mathrm{M} \mathrm{CH}_3 \mathrm{COONa}$ and $0.01 \mathrm{M} \mathrm{CH}_3 \mathrm{COOH}$ are mixed to form buffer solution having pH 4.50 ?

5.5

6.5

2.5

MHT CET (PCB) 2025 9th April Evening Shift

MCQ (Single Correct Answer)

-0

The solubility of sparingly soluble, salt $\mathrm{AX}_2$ is $1.5 \times 10^{-3} \mathrm{~mol} \mathrm{dm}^{-3}$. What is its solubility product?

$1.65 \times 10^{-7}$

$1.35 \times 10^{-8}$

$2.25 \times 10^{-8}$

$1.15 \times 10^{-7}$

MHT CET (PCB) 2025 9th April Evening Shift

MCQ (Single Correct Answer)

-0

Solubility of $\mathrm{Mg}(\mathrm{OH})_2$ is ' S ' $\mathrm{mol} / \mathrm{dm}^3$ its solubility product is equal to

$\mathrm{S}^2$

$27 \mathrm{~S}^4$

$4 \mathrm{~S}^3$

$4 \mathrm{~S}^2$

MHT CET (PCB) 2025 9th April Morning Shift

MCQ (Single Correct Answer)

-0

Identify the compound from following so that Ostwald's dilution law is NOT applicable to it.

NaOH

$\mathrm{NH}_4 \mathrm{OH}$

$\mathrm{H}_2 \mathrm{CO}_3$

$\mathrm{H}_2 \mathrm{~S}$

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