Embibe Experts Solutions for Chapter: Ionic Equilibrium, Exercise 1: AP EAPCET 2020 (24-Sep Shift-1)

Two solutions $\mathrm{A}$ and $\mathrm{B}$ have $\mathrm{pH}$ $3$ and $6$ respectively. Which of the following statement is correct ?

A solution is prepared by dissolving $2 \mathrm{g}$ of $\mathrm{NaOH}$ in one litre water. Find the $\mathrm{pH}$ of this solution, assuming complete ionization. [$K_w$ for water $=1\times {10}^{-14}$]

At $\mathrm{T}\left(\mathrm{K}\right)$, if the ionization constants of $\mathrm{HCOOH}$ and $\mathrm{HCN}$ are $2.0\times {10}^{-4}$ and $5.0\times {10}^{-9}$, respectively, the ionization constants of the corresponding conjugate bases, respectively, are

Given the ${\mathrm{pK}}_{\mathrm{a}}$ of a weak acid $\mathrm{HA}$ as $4.60$ and ${\mathrm{pK}}_{\mathrm{b}}$ of a weak base $\mathrm{BOH}$ as $4.80,$ then find the $\mathrm{pH}$ of $0.1 \mathrm{M}$ solution of the salt $\mathrm{BA},$ formed from $\mathrm{HA}$ and $\mathrm{BOH}.$

If the solubility is represented as $\text{'}\mathrm{S}\text{'} \mathrm{mol} \mathrm{L}$ and the solubility product as ${\mathrm{K}}_{\mathrm{sp}}$, the relation between the two for ${\mathrm{Zr}}_3{\left({\mathrm{PO}}_4\right)}_4$ is

If ${\mathrm{K}}_{\text{sp }}$ (Solubility product) of $\mathrm{Ni}(\mathrm{OH}{)}_2$ is $2.0\times {10}^{-15}$, what is the molar solubility of $\mathrm{Ni}(\mathrm{OH}{)}_2$ in $0.01\mathrm{MNaOH}?$