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1. Predict whether an aqueous solution of (NH4)2 SO4 is acidic, basic or neutral? 2. Justify your answer. |
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Answer» 1. An aqueous solution of (NH4) SC4 is acidic in nature. 2. (NH4)2SO4 is formed from weak base, NH4OH, and strong acid, H2SO4 . In water, it dissociates completely (NH4)2 SO4 (aq) → 2NH+4 (aq) + SO2-4 (aq) NH+4 ions undergoes hydrolysis to form NH4OH and H+ ions. NH4 +(aq) + H2O(l) ⇌ NH4OH(aq) + H+(aq) NH4OH is a weak base and therefore remains almost unionised in solution. This results in increased H+ ion concentration in solution making the solution acidic. |
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