A salt whose aqueous solution will have a pH of more than 7 will be-a- K2CO3-b- K2SO4-c- NaCl-d- NH4Cl

(a) K2CO3K2CO3 is formed from a weak acid, carbonic acid (H2CO3), and a strong base, potassium hydroxide (KOH). On hydrolysis, K2CO3 forms more OH ions than H+ ...

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Standard XII

Chemistry

Properties of Water

A salt whose ...

Question

A salt whose aqueous solution will have a pH of more than 7 will be:
(a) K₂CO₃
(b) K₂SO₄
(c) NaCl
(d) NH₄Cl

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Solution

(a) K₂CO₃

K₂CO₃ is formed from a weak acid, carbonic acid (H₂CO₃), and a strong base, potassium hydroxide (KOH). On hydrolysis, K₂CO₃ forms more OH^- ions than H⁺ ions. Thus, it is basic, with a pH more than 7.

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A salt whose aqueous solution will have a pH of more than 7 will be: (a) K2CO3 (b) K2SO4 (c) NaCl (d) NH4Cl

(a) K2CO3K2CO3 is formed from a weak acid, carbonic acid (H2CO3), and a strong base, potassium hydroxide (KOH). On hydrolysis, K2CO3 forms more OH- ions than H+ ions. Thus, it is basic, with a pH more than 7.

A salt whose aqueous solution will have a pH of more than 7 will be:
(a) K₂CO₃
(b) K₂SO₄
(c) NaCl
(d) NH₄Cl

(a) K₂CO₃

K₂CO₃ is formed from a weak acid, carbonic acid (H₂CO₃), and a strong base, potassium hydroxide (KOH). On hydrolysis, K₂CO₃ forms more OH^- ions than H⁺ ions. Thus, it is basic, with a pH more than 7.