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ICSE Class 10 Chemistry 2018 Paper

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Question : 66 of 80
Marks: +1, -0
Identify YY and ZZ.
Solution:  
A compound XX (having vinegar like smell) is acetic acid (CH3COOH)(\mathrm{CH}_3\mathrm{COOH}) .
  C2H5OH+CH3COOH(X)→(Z) Conc. H2SO4\; \mathrm{C}_2\mathrm{H}_5\mathrm{OH} + \underset{(X)}{\mathrm{CH}_3\mathrm{COOH}} \xrightarrow[(Z)]{\text{ Conc. }\mathrm{H}_2\mathrm{SO}_4} CH3COOC2H5(Y)+H2O\underset{(Y)}{\mathrm{CH}_3\mathrm{COOC}_2\mathrm{H}_5} + \mathrm{H}_2\mathrm{O}
  Y=\; Y = ester (Ethyl ethanoate\/Ethyl acetate)
  Z=   Conc.   H2SO4\; Z = \;\text{ Conc. }\;\mathrm{H}_2\mathrm{SO}_4
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