Question

Write balanced chemical equations for the following:-
1)Iron filings dropped in a aqueous solution of copper sulphate.

2)Zinc oxide is dissolved in dilute hydrochloric acid.

3) Combustion of ethanol.


4) Reaction of ethanoic acid with sodium hydroxide. ​

Answer 1

Answer:

(a)Sodium carbonate on reaction with hydrochloric acid in equal molar concentrations gives sodium chloride and sodium hydrogen-carbonate.

(b)Sodium hydrogencarbonate on reaction with hydrochloric acid gives sodium chloride, water and liberates carbon dioxide.

(c)Copper sulphate on treatment with potassium iodide precipitates cuprous iodide (Cu2I2), liberates iodine gas and also forms potassium sulphate.

Ans.