List of top Chemistry Questions on Ionic Equilibrium In Solution asked in MET

The \(pK_a\) of acetic acid is \(4.74\). The concentration of \( \mathrm{CH_3COOH} \) is \(0.01\, M\). The pH of \( \mathrm{CH_3COOH} \) is _ _ _ _ _ .

Solution of 0.1 N \(NH_4OH\) and 0.1 N \(NH_4Cl\) has pH 9.25. Then p\(K_b\) of \(NH_4OH\) is :

100 mL of 1.0 M HCl are mixed with 75 mL of 1.0 M \(Na_2CO_3\). The resulting solution will be:

Among the following, compound with the lowest \(pK_a\) value is:

Which of the following plot represents the graph of pH against volume of alkali added in the titration of NaOH and HCl?

In a mixture of 1 g H\(_2\) and 8 g O\(_2\) the mole fraction of hydrogen is

In hydrolysis of a salt of weak acid and strong base, A\(^-\) + H\(_2\)O \(\rightleftharpoons\) HA + OH\(^-\), the hydrolysis constant (\(K_h\)) is equal to

An aqueous solution freezes at -0.186°C, then elevation in boiling point is (\(K_b = 0.512\), \(K_f = 1.86\))

The solubility CaF\(_2\) is s moles/litre. Then solubility product is

Degree of dissociation of an acid HCl is $95%$, $0.192\mathrm{g}$ of the acid is present in $0.5\mathrm{L}$ of solution. The pH of the solution is}

The solubility product of $\mathrm{Al}_2(\mathrm{SO}_4)_3$ is given by the expression}

pH of an acid buffer is given by

The conjugate base of the acid H\(_2\)S is

Find the pH value of the mixture containing 50 cc M HCl and 30 cc M NaOH solution, assuming both to be completely ionised.

Which of the following is the strongest base?

Strongest conjugate base is

If 200 mL of a 0.031 M solution of H$_2$SO$_4$ are added to 84 mL of a 0.150 M KOH solution, what is the pH of the resulting solution?

Which one of the following is the weakest acid?

An aqueous solution of phosphoric acid, H$_3$PO$_4$ being titrated has molarity equal to 0.25 M. Which of the following could be normality of this solution?

A certain reaction rate increases \(1000\) folds in the presence of a catalyst at \(27^\circ\mathrm{C}\). The activation energy of the original pathway is \(98\mathrm{\ kJ/mol}\). What is the activation energy of the new pathway?

Consider the following reaction in an aqueous solution \[ \mathrm{I}^-(aq) + \mathrm{OCl}^- \rightarrow \mathrm{IO}^-(aq) + \mathrm{Cl}^-(aq) \] and the following initial concentration and initial rate data for this reaction.

Which of the following is the correct rate law for this reaction?

Which one of the following reaction energy diagrams best represents a reaction in the reverse direction; that it is the most endothermic?

The pH of a solution is increased from 3 to 6, its H\(^+\) ion concentration will be:

Solubility product of BaCl\(_2\) is \( 4 \times 10^{-9} \). Its solubility in mol/L would be:

An example of a Lewis acid is: