How does ${\mathrm{K}}_{\mathrm{w}}$ vary with temperature and why?

Important Questions on Ionic Equilibrium in Solution

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 9 - Ionic Equilibrium in Solution>ADDITIONAL QUESTIONS>Q 15

Briefly explain the term '$\mathrm{pH}$'.

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 9 - Ionic Equilibrium in Solution>ADDITIONAL QUESTIONS>Q 16

What do you understand by ‘$\mathrm{pH}$ scale’? Can a solution have$\mathrm{pH}$ less than $0$ or more than $14$? Explain your answer, giving suitable reasons.

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 9 - Ionic Equilibrium in Solution>ADDITIONAL QUESTIONS>Q 17

Derive expression for the calculation of $\mathrm{pH}$ of a solution of a salt of weak acid with a strong base.

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 9 - Ionic Equilibrium in Solution>ADDITIONAL QUESTIONS>Q 17

Derive expression for the calculation of $\mathrm{pH}$ of a solution of a salt of weak base with a strong acid.

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 9 - Ionic Equilibrium in Solution>ADDITIONAL QUESTIONS>Q 18

Prove that the degree of hydrolysis of the solution of a salt of a weak acid with a weak base (e.g. ${\text{CH}}_3{\text{COONH}}_4$) is independent of the concentration of solution.

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 9 - Ionic Equilibrium in Solution>ADDITIONAL QUESTIONS>Q 19

Derive that for the solution of a salt of strong acid with a weak base (having concentration = $\mathrm{c} {\mathrm{molL}}^{-1}$), $\mathrm{p}\text{H}=-\frac{1}{2}\left[\log {\text{K}}_{\mathrm{w}}-\log {\text{K}}_{\mathrm{b}}+\mathrm{logc}\right]$.

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 9 - Ionic Equilibrium in Solution>ADDITIONAL QUESTIONS>Q 20

Briefly explain why phenolphthalein is not a suitable indicator when the base is weak and why methyl orange is not suitable when the acid is weak.

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 9 - Ionic Equilibrium in Solution>ADDITIONAL QUESTIONS>Q 21

Is $\mathrm{pH}$ of the end point of acid-base titration always equal to $7$? Explain why or why not.