CBSE Class 10 Science 2019 · Paper 31/3/1 · Question 23
List the conclusions you will draw while studying the following properties of ethanoic acid :
- (a)Odour
- (b)Solubility in water
- (c)Effect on litmus paper
- (d)Reaction with sodium hydrogen carbonate
Answer
Ethanoic acid smells of vinegar, dissolves in water, is acidic (turns blue litmus red) and gives carbon dioxide with sodium hydrogen carbonate.
(a) Odour: ethanoic acid has a pungent smell, like that of vinegar.
(b) Solubility in water: it dissolves completely in water (mixes in all proportions), giving one clear layer.
(c) Effect on litmus paper: it turns blue litmus red and has no effect on red litmus, so it is acidic in nature.
(d) Reaction with sodium hydrogen carbonate: brisk effervescence is seen as carbon dioxide is given off, which turns lime water milky:
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