Embibe Experts Solutions for Chapter: Equilibrium, Exercise 1: AMU-AT (B.Tech.) 2019

The ${\mathrm{K}}_{\mathrm{sp}}$ of ${\mathrm{PbCO}}_3$ and ${\mathrm{MgCO}}_3$ are $15\times {10}^{-15}$ and $1\times {10}^{-15}$, respectively at $298 \mathrm{K}$. The concentration of ${\mathrm{Pb}}^{2+}$ ions in a saturated solution containing ${\mathrm{MgCO}}_3$ and ${\mathrm{PbCO}}_3$ is

For ${\mathrm{NH}}_4\mathrm{HS}\left(\mathrm{s}\right)\rightleftharpoons {\mathrm{NH}}_3\left(\mathrm{g}\right)+{\mathrm{H}}_2 \mathrm{S}\left(\mathrm{g}\right)$  the
observed pressure for the reaction mixture in equilibrium is $1.12 \mathrm{atm}$ at $106°\mathrm{C}$. What is the value of ${\mathrm{K}}_{\mathrm{p}}$ for the reaction?

For a buffer of a mixture of $0.12 \mathrm{mol} {\mathrm{L}}^{-1}$ ${\mathrm{CH}}_3\mathrm{COOH}$ and $0.12 \mathrm{mol} {\mathrm{L}}^{-1}{\mathrm{CH}}_3\mathrm{COONa},$ the buffer capacity is

The reaction quotient $\left(\mathrm{Q}\right)$ for the reduction of ${\mathrm{O}}_2$ to ${\mathrm{H}}_2\mathrm{O}$ in acid solution,
${\mathrm{O}}_2\left(\mathrm{g}\right)+4{\mathrm{H}}^{+}\left(\mathrm{aq}\right)+4{\mathrm{e}}^{-}⟶2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)$ is,
[where, ${\mathrm{\alpha }}_{{\mathrm{H}}^{+}}=$ activity of ${\mathrm{H}}^{+},{\mathrm{p}}_{{\mathrm{O}}_2}=$ pressure of ${\mathrm{O}}_2$ when it is present in the reaction, $\mathrm{p}°=$ pressure of ${\mathrm{O}}_2$ at standard state].

What will be the $\mathrm{pH}$ of solution formed by mixing $10 \mathrm{mL}0.1{\mathrm{MNaH}}_2{\mathrm{PO}}_4$ $15 \mathrm{mL}$ $0.1{\mathrm{MNa}}_2{\mathrm{HPO}}_4$
[Given: $\left.{\mathrm{pK}}_1=2.12,{\mathrm{pK}}_2=7.2\right]$

What kind of a molecule ${\mathrm{AlCl}}_3$ is ?

In the hydrolysis of a salt of weak acid and weak base, the hydrolysis constant ${\mathrm{K}}_{\mathrm{h}}$ is equal to

An aqueous solution in which the ${\mathrm{H}}^{+}$ ion concentration is greater than ${10}^{-7} \mathrm{M}$ is said to be