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Write the main difference between an acid and a base. With the help of suitable examples explain the term neutralization and the formation of- (i) acidic, (ii) basic and (iii) neutral salts. |
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Answer» Acids are sour in taste and change the colour of the blue litmus to red. Their pH is less Ther reaction between an acid and a base to give a salt and water is known as a neutralisation reaction. In general, a neutralisation reaction can be written as Acid + Base `rarr` Salt + Water Example: `NaOH (aq) + HCl (aq) rarr NaCl (aq) + H_(2)O(l)` (i) When neutralisation of a strong acid with a weak base takes place, it leads to the formation of acidic salt. Example: `H_(2)SO_(4) +CuO to CuSO_(4) + H_(2)O` (ii) When neutralisation of a weak acid with a strong base takes place, it leads to the formation of basic salt. Example: `NaOH + CH_(3) COOH rarr CH_(3) COONa + H_(2)O` When neutralisation of a strong acid with a strong base takes place, it leads to the fromation of neutral salt. Example: `NaOH + HCl rarr NaCl +H_(2)O` NaCl is a neutral salt. |
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