4 both the melting and boiling point of the solution decrease
Explanation:
Boiling point of solution increases common salt in a non vocative solute which lower the vapour pressure of the solution and eventually increases boiling points of solution.
UPTU/UPSEE-2010
Ionic Equilibrium
230047
Which of the following pairs will show common ion effect?
1 barium chloride + barium sulphate
2 silver cyanide + potassium nitrite
3 ammonium hydroxide + ammonium chloride
4 sodium chloride + hydrogen chloride
Explanation:
Common ion effect is show when weak electrolyte and strong electrolyte is mixed. \(\mathrm{NH}_4 \mathrm{OH}\) is weak base to which \(\mathrm{NH}_4 \mathrm{Cl}\) is added which provides common \(\mathrm{NH}_4\) ion dissociation of \(\mathrm{NH}_4 \mathrm{OH}\) is suppressed. Since \(\mathrm{NH}_4 \mathrm{OH}\) is a weak electrolyte whereas \(\mathrm{NH}_4 \mathrm{Cl}\) is a strong electrolyte it shows the common ion effect.
4 both the melting and boiling point of the solution decrease
Explanation:
Boiling point of solution increases common salt in a non vocative solute which lower the vapour pressure of the solution and eventually increases boiling points of solution.
UPTU/UPSEE-2010
Ionic Equilibrium
230047
Which of the following pairs will show common ion effect?
1 barium chloride + barium sulphate
2 silver cyanide + potassium nitrite
3 ammonium hydroxide + ammonium chloride
4 sodium chloride + hydrogen chloride
Explanation:
Common ion effect is show when weak electrolyte and strong electrolyte is mixed. \(\mathrm{NH}_4 \mathrm{OH}\) is weak base to which \(\mathrm{NH}_4 \mathrm{Cl}\) is added which provides common \(\mathrm{NH}_4\) ion dissociation of \(\mathrm{NH}_4 \mathrm{OH}\) is suppressed. Since \(\mathrm{NH}_4 \mathrm{OH}\) is a weak electrolyte whereas \(\mathrm{NH}_4 \mathrm{Cl}\) is a strong electrolyte it shows the common ion effect.