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(a) Write structure of ethanol. Give che...

(a) Write structure of ethanol. Give chemical equation of its reaction with (i) sodium (ii) excess conc `H_2SO_4` at 443 K. (b) (i) Write your observation, if you dip a red litmus paper in soap solution. (ii) Explain the formation of scum in hard water. (iii) Suggest one method to remove the temporary hardness of water. 1

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