Question

Write balanced chemical equation for the following: (a) Methane is burned in sufficient air (b) Ethanol is treated with sodium (c) Ethanoic acid is reacted with sodium hydroxide (d) Ethanoic acid is treated with sodium carbonate. (e) Ethanol is mixed with ethanoic acid in the presence of an acid.

Answer 1

a) When methane burnt in air or oxygen, it produces large amounts of heat, together with carbon dioxide and water vapour formation. Hence it is  used as fuels. Combustion of methane can be explained by above reaction. (refer picture).

b) 2C2H5OH + 2Na = 2C2H5ONa + H2.

c) CH3COOH + Na(OH) → H2O +CH3COONa.

d) If you pour some dilute ethanoic acid onto some white sodium carbonate or sodium hydrogencarbonate crystals, there is an immediate fizzing as carbon dioxide is produced. You end up with a colourless solution of sodium ethanoate.
CH3COOH+ NaHCO3 ------> CH3COONa + H2O + CO2.

e) CH3COOH + CH3CH2OH-(reacts with H2SO4) to give CH3COOHCH2CH3+ H2O.

Answer 2

When methane burnt in air or oxygen, it produces large amounts of heat, together with carbon dioxide and water vapour formation. Hence it is  used as fuels. Combustion of methane can be explained by above reaction. (refer picture).

b) 2C2H5OH + 2Na = 2C2H5ONa + H2.

c) CH3COOH + Na(OH) → H2O +CH3COONa.

d) If you pour some dilute ethanoic acid onto some white sodium carbonate or sodium hydrogencarbonate crystals, there is an immediate fizzing as carbon dioxide is produced. You end up with a colourless solution of sodium ethanoate.

CH3COOH+ NaHCO3 ------> CH3COONa + H2O + CO2.

e) CH3COOH + CH3CH2OH-(reacts with H2SO4) to give CH3COOHCH2CH3+ H2O.

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