Ionic Equilibrium

Which of the following is a Lewis acid?

Assuming that $\mathrm{Ba}(\mathrm{OH})_{2}$ is completely ionised in aqueous solution under the given conditions the concentration of $H_{3}O^{+}$ ions in$0.005M$ aqueous solution of $\mathrm{Ba}(\mathrm{OH})_{2}$ at…

If $K_{\mathrm{sp}}$ of $\mathrm{Ag}_{2}\mathrm{CO}_{3}$ is $8\times\,10^{-12}$ , the molar solubility of $\mathrm{Ag}_{2}\mathrm{CO}_{3}$ in $0\operatorname{.1}\,M\mathrm{AgNO}_{3}$ is:

Which of the following is a Lewis acid?

If 1 mM solution of ethylamine produces $\mathrm{pH}=9$, then the ionization constant $\left(\mathrm{K}_{\mathrm{b}}\right)$ of ethylamine is $10^{-x}$. The value of $x$ is ______ (nearest integer). [The degree of…

A mixture of $100m\mathrm{mol}$of $\mathrm{Ca}(\mathrm{OH})_{2}$ and $2g$ of sodium sulphate was dissolved in water and the volume was made up to $100\mathrm{mL}.$What is the mass of calcium sulphate formed and the…

$3g$ of acetic acid is added to $250mL$ of $0.1MHCl$ and the solution made up to $500mL$.To$20mL$ of this solution $\frac{1}{2}mL$ of $5MNaOH$ is added. The $pH$ of the solution is ________ [Given: $pKa$ of acetic acid…

Which of the following salts is the most basic in aqueous solution?

Total number of non bonded electrons present in $\mathrm{NO}_2{ }^{-}$ion based on Lewis theory is

The titration curve of weak acid vs. strong base with phenolphthalein as indicatoris shown below. The$K_{\text{phenolphthalein}}=4\times\,10^{-10}$ Given: $\log\,2=0.3$ The number of following statement/s which is/are…

$20\mathrm{ml}$ of $\text{0.1 M H}_{2}\mathrm{SO}_{4}$ solution is added to $30\mathrm{mL}$ of $0\operatorname{.2}\,M\mathrm{NH}_{4}\mathrm{OH}$ solution. The $\mathrm{pH}$ of the resultant mixture is:…

$600\mathrm{mL}$ of $0.01M\mathrm{HCl}$ is mixed with $400\mathrm{mL}$ of $0.01MH_{2}\mathrm{SO}_{4}$. The $\mathrm{pH}$ of the mixture is _____$\times\,10^{-2}$. (Nearest integer) [Given…