Question

An element A reacts with water forming a lilac flame to give product B. Element A burns in air to give product C and A can also react with sulphuric acid to give product D along with a release of gas. Write the balanced chemical reaction for the formation of product B,C and D. Identify the gas released by performing a test to confirm the same.

Answer 1

Correct option is D)

Element A is sodium metal(Na) as it burns with a golden flame.

Element B with atomic number 17 is chlorine (Cl).

Sodium and chlorine combine to form sodium chloride, NaCl(compound C).

The reaction can be written as:

2Na+Cl

2

→2NaCl

Aqueous solution of NaCl on electrolysis gives the compound D, sodium hydroxide(NaOH). The equation for this can be written as:

2NaCl(aq)+2H

2

O(l)→2NaOH(aq)+Cl

2

(g)+H

2

(g)

Answer 2

Answer:

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