MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryIonic equilibriumSalt Hydrolysis

A white salt is readily soluble in water and gives a colourless solution with a pH of about 9. The salt would be

A.NH4NO3
B.CH3COONa✓ Correct
C.CH3COONH4
D.CaCO3.
Explanation

As after dissolution in water, the salt gives basic pH, it is evident that the salt is formed by a strong base and a weak acid For the following given salts, 3 4 4 3 HNO NH OH NH NO -> (Strong acid + Weak base) 3 3 CH COOH NaOH CH COONa -> (Weak acid + Strong base) 3 4 3 4 CH COOH NH OH CH COONH -> (Weak acid + Weak base) 2 3 3 2 Ca OH H CO CaCO -> IONIC EQUILIBRIUM 44 (Weak acid + Strong base) But 3 CaCO  is insoluble in water. 106. Which has the highest pH ? (a) CH3COOK (b) Na2CO3 (c) NH4Cl (d) NaNO3 We  know  that  ammonium  chloride  is  a  salt  of ammonium hydroxide and HCl

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