what is the purpose of Buffer in any titration?Ex:In
determination of hardness of water we use ammonia
ammoniachloride buffer in titration with EDTA.Why?
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Answer Posted / bhagyashree
During reaction between metal and EDTA, H+ ions are formed & decreases the pH of reaction mixture. Hence, a buffer solution of pH 10 is necessary during titration for Ca++ & Mg++ so that it will not allow the decrease of pH.
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