Chemistry · JEE

Ionization of water, pH scale, common ion effect, hydrolysis of salts and pH of their solutions, the solubility of sparingly soluble salts, solubility products and buffer solutions MCQs for JEE

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Q1ChemistryUnit 6: Equilibrium

K_{a}

for acetic acid in water is

1.7 \times

10^{-5}

25^{\circ} \mathrm{C} .

The

\mathrm{pH}

of a mixture of 25

\mathrm{ml}

0.02 \mathrm{N}

acetic acid and

2.5 \mathrm{ml}

of 0.1N NaOH (neglecting volume change) will be

(\log 1.7=0.23)

Q2ChemistryUnit 6: Equilibrium

Assertion Assertion: A solution of

N H_{4} C l

in water is acidic in nature. Reason Reason : Ammoniun ions undergo hydrolysis to form

N H_{4} O H

Q3ChemistryUnit 6: Equilibrium

1.2 mol of

\boldsymbol{C H}_{3} \boldsymbol{N} \boldsymbol{H}_{2}\left(\boldsymbol{p} \boldsymbol{K}_{\boldsymbol{b}}=\boldsymbol{3} . \boldsymbol{3}\right)

is added to 0.8 moles of

H C l

and the solution is diluted to one litre, resulting

\boldsymbol{p} \boldsymbol{H}

of solution is:

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