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Solution. 1  The ions from KCl derive from a strong acid (HCl) and a strong base (KOH). 2  Therefore, neither ion will affect the acidity of the solution, so KCl is a neutral salt.3  Although the K ion derives from a strong base (KOH), the NO 2 ion derives from a weak acid (HNO 2). Therefore, neither ion will affect the acidity of the solution, so KCl is a neutral salt. 2  Although the K ion derives from a strong base (KOH), the NO 2 ion derives from a weak acid (HNO 2). 3  Therefore the solution will be basic, and KNO 2 is a basic salt.
Only a very small percentage of the acid molecules change into ions: CH 3 COOH(aq) CH 3 COO-(aq) + H + (aq) â´ hydrochloric acid is a strong acid, ethanoic acid is a weak acid. A strong acid is an acid which completely ionizes in water. A weak acid is an acid which only partly ionizes in water. The three mineral acids (HCl, HNO 3 , H 2 SO 4 ) are strong acids, as they fully or highly ionize in water.