NEET Chemistry Chemical Equilibrium MCQs

A weak base, BOH, has a $K_b$ of $1.0 imes 10^{-5}$. A 0.1 M solution of BOH is titrated with 0.1 M HCl. At the equivalence point, the pH of the resulting solution will be closest to:

100 mL of 0.1M $HCN$ ($K_a= 6.2 imes 10^{-10}$) is titrated with 0.2M $NaOH$. Calculate the pH at the half-equivalence point.

Which is the best choice for weak base-strong acid titration?

Which is the best choice for weak base-strong acid titration?

The concentration of oxalic acid is $'x'\;{\rm{mol}}\;{{\rm{L}}^{ - 1}}$ 40 mL. of this solution reacts with 16 mL of 0.05 M acidified ${\rm{KMn}}{{\rm{O}}_4}$. What is the pH of $'x'\;$ M oxolic acid solution?

(Assume that oxalic acid dissociates completely)

The concentration of oxalic acid is $'x'\;{\rm{mol}}\;{{\rm{L}}^{ - 1}}$ 40 mL. of this solution reacts with 16 mL of 0.05 M acidified ${\rm{KMn}}{{\rm{O}}_4}$. What is the pH of $'x'\;$ M oxolic acid solution?

(Assume that oxalic acid dissociates completely)

$2.5\;mL\;of\;\frac{2}{5}\;M$ weak monoacidic base ${K_b} = 1 imes {10^{ - 12}}\;\;{\rm{at}}\;25^\circ C$ is titrated with $\frac{2}{{15}}\;M\;{\rm{HCl}}$ in water at $25^\circ C$ The concentration of ${{\rm{H}}^ + }$ at equivalence point is

${K_w} = 1 imes {10^{ - 14}}\;{\rm{at}}\;25^\circ C$

The indicators used in the titration of iodine against sodium thiosulphate is

In the titration of ${\rm{N}}{{\rm{a}}_2}{\rm{C}}{{\rm{O}}_3}\;{\rm{and}}\;{\rm{ HCl}}$, the indicator used is

The indicator used in the titration of sodium carbonate with sulphuric acid is