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Organic Chemistry — Chemistry STD 10 — Question

ICSE BoardEnglish MediumSTD 10ChemistryOrganic Chemistry3 Marks
Question
Write the equations for the following laboratory preparations :
(i) Ethane from sodium propionate.
(ii) Ethene from iodoethane.
(iii) Ethyne from calcium carbide.
✓

Answer

(i) $C _2 H _5 COONa + NaOH \xrightarrow[ CaO ]{\text { heat }} C _2 H _6+ Na _2 CO _3$
(ii) $C _2 H _5 I + KOH \longrightarrow C _2 H _5 OH + KI$
$C _2 H _5 OH + H _2 SO _4$ (conc.) $\xrightarrow{\text { heat }} C _2 H _4+ H _2 SO _4 \cdot H _2 O$
(iii) $CaC _2+2 H _2 O \longrightarrow Ca ( OH )_2+ C _2 H _2$

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