Question

Predict if the solutions of the following salts are neutral, acidic or basic: NaCl, KBr, NaCN, NH4NO3, NaNO2 and KF

Answer 1

(i) NaCl: NaCl + H2O $\leftrightarrow$NaOH (Strong base)+ HCl(Strong acid)
Therefore, it is a neutral solution.

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(ii) KBr: KBr + H2O $\leftrightarrow$ KOH(Strong base) + HBr(Strong acid)
Therefore, it is a neutral solution.

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(iii) NaCN: NaCN + H2O$\leftrightarrow$HCN(Weak acid) + NaOH(Strong base)
Therefore, it is a basic solution.

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(iv) NH4NO3 : NH4O3 + H2O$\leftrightarrow$NH4OH(Weak base) + HNO3(Strong acid)
Therefore, it is an acidic solution.

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(v) NaNO2 : NaNO2 + H2O $\leftrightarrow$ NaOH(strong base) + HNO2(Weak acid)
Therefore, it is a basic solution.

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(vi) KF : KF + H2O $\leftrightarrow$ KOH(Strong base) + HF(Weak acid)
Therefore, it is a basic solution