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CBSE /Class 10
Science MCQ Based On Carbon and its compounds ethanoic acid
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CBSE Class 10 Science Carbon and its compounds ethanoic acid
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A 5 - 8 % of ethanoic acid in water is called vinegar .
Acetic acid is the other name for ethanoic acid .
Glacial acetic acid is the 100 % acetic acid obtained by first freezing pure ethanoic acid to get glacier like structure then it is melt to get obtain the glacial acetic acid.
When 2 molecules of Ethanoic acid reacts with sodium carbonate it produces 2 molecules of sodium ethanoate 1 molecule of water and 1 molecule of carbon di oxide.
Stearic acid is one of the fatty acids present in the soaps.
When a molecule of Ethanoic acid reacts with sodium hydrogen carbonate it produces a molecule of sodium ethanoate 1 molecule of water and 1 molecule of carbon di oxide.
Saponificarion is the reaction reverse to that of esterification.
Due to the formation of calcium stearate and magnesium stearate with hard water most of the soap is wasted in the production of these precipitates that is why it is unadvisable to use soap with hard water.
All the carboxylic acids react with sodium carbonate and sodium hydrogen carbonate to give CO2 gas as one of its products which can be further tested by passing the produced gas through lime water if it turns lime water milky it shows the presence of carboxylic acid or else it is not the case.
Water is hard due to the presence of calcium and magnesium ions.
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