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JEE Advanced2010ChemistryIonic EquilibriumActual

Amongst the following, the total number of compounds whose aqueous solution turns red litmus paper blue is array llll KCN & K ₂ SO ₄ & ( NH ₄ )₂ C ₂ O ₄ & NaCl Zn ( NO ₃ )₂ & FeCl ₃ & ~K ₂ CO ₃ & NH ₄ NO ₃ LiCN & & & array

Correct answer

3

Step-by-step solution

The aqueous solution of KCN , K ₂ CO ₃ and LiCN turn red litmus blue because of alkaline nature. The anionic hydrolysis turns the solution alkaline. Ionic equilibrium Conceptual III

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