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In a school laboratory the students are studying the properties of ehanoic acidthrough certain experiments. How can they test its acidic nature ? Give two tests. |
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Answer» Reaction with sodium carbonate:Ethanoic acid reacts with sodium carbonate to give sodium acetate ,carbon dioxide and water2CH3-COOH + Na2CO3→2CH3COO-Na++ CO2+ H2OReaction with sodium hydrogen carbonate:Ethanoic acid reacts with sodium hydrogen carbonate to give sodium acetate ,carbon dioxide and water.CH3-COOH + NaHCO3→CH3COO—Na++ CO2+ H2O In the above reactions formation of Salt and water, release of Carbon dioxide gas confirmes acidic nature of CH3COOH.Reaction with base:Ethanoic acid reacts with bases to give salt and water.Example:Reaction of ethanoic acid with sodium hydroxide to form sodium acetate and water.CH3-COOH + NaOH → CH3COONa + H2O In the above reactions formation of Salt and water confirmes acidic nature of CH3COOH.Reaction with sodium hydrogen carbonate, sodiumhydrogen carbonate and reaction with bases are useful to the acidic nature of ethanoic acid (CH3COOH). |
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