Question

Sodium salt of which acid will be needed for preparation of butane?give chem equation

Answer 1

Answer: Sodium salt of Pentanoic acid.

Decarboxylation reaction:

CH3CH2CH2CH2COONa + NaOH + CaO → CH3CH2CH2CH3 + Na2CO3

Answer 2

The sodium salt of pentanoic acid is used to prepare butane.

• When sodium salt of pentanoic acid reacts with sodium hydroxide in the presence of calcium oxide and heat produces butane along with sodium carbonate.
• Thus, the balanced chemical equation is as follows-
• $CH_3CH_2CH_2CH_2COONa+NaOH\rightarrow CH_3CH_2CH_2CH_3+Na_2CO_3$.
• In this reaction, one mole of the sodium salt of pentanoic acid reacts with one mole of sodium hydroxide in the presence of calcium oxide and heat to produce one mole of butane along with one mole of sodium carbonate.