Question

a metal 'A' burns vigorously in air. it reacts with other element 'B' and make common salt .the aqueous solution of common salt on electrolysis gives a compound 'C' and liberates hydrogen gas. identify A B and C .write down a balanced equation of the electrolysis and also name this process

Answer 1

Answer:

A =sodium

B=chlorine

the process is chloro-alkali process

C=sodium hydroxide (NaOH)

balanced equation is

2NaCl +2H2O  ----->  2NaOH +Cl2   + H2

Answer 2

A, B and C are respectively SODIUM metal, CHLORINE gas and SODIUM HYDROXIDE.

- Metal A is sodium as it burns vigorously in air.

- It reacts with Chlorine gas (B) to form the common salt (sodium chloride).

- Upon electrolysis, the sodium chloride solution forms Sodium Hydroxide (C) as follows:

2 NaCl + 2 H2O → H2 + 2 NaOH + Cl2

- The name of this process is Chloralkali process.