CBSE Class 10 Science 2017 · Paper 31/3/C · Question 7

Carbon and its Compounds 3 marks Medium

Complete the following chemical equations

(i) $CH_{3} COOH + Na_{2} CO_{3} ⟶$
(ii) $CH_{3} COOH + NaOH ⟶$
(iii) $CH_{3} COOC_{2} H_{5} + NaOH ⟶$

Answer

Ethanoic acid gives sodium ethanoate with sodium carbonate and with sodium hydroxide; ethyl ethanoate with sodium hydroxide gives sodium ethanoate and ethanol.

(i)

2 CH_{3} COOH + Na_{2} CO_{3} \to 2 CH_{3} COONa + H_{2} O + CO_{2}

(sodium ethanoate, water and carbon dioxide) (ii)

CH_{3} COOH + NaOH \to CH_{3} COONa + H_{2} O

(sodium ethanoate and water) (iii)

CH_{3} COOC_{2} H_{5} + NaOH \to CH_{3} COONa + C_{2} H_{5} OH

(sodium ethanoate and ethanol; this is saponification)

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CBSE Class 10 Science 2017 · Paper 31/3/C · Question 7

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