Question

Choose the correct statement(s) from the options given below.​

• A. The reaction of NaCl with $H_{2}S{O}_4$ above $200°C$ gives sodium bisulphate as by-product.​
• B. The reaction of rock salt with conc. sulphuric acid gives HCl.​
• C. Inverted funnel is used to avoid back suction during preparation of aqueous HCl.​
• D. The reaction of common salt with sulphuric acid is used in the laboratory preparation of hydrochloric acid.​

Answer 1

Answer: (B), (C), (D)

The reaction of common salt with sulphuric acid is used in the laboratory preparation of hydrochloric acid.​

1. The reaction of rock salt with conc. sulphuric acid gives HCl.​ This statement is correct.
2. Inverted funnel is used to avoid back suction during preparation of aqueous HCl.​ This statement is also correct.
3. The reaction of NaCl with $H_{2}S{O}_4$ above $200°C$ gives sodium sulphate as by-product.​ So this option is not correct.
4. The reaction of common salt with sulphuric acid is used in the laboratory preparation of hydrochloric acid.​ This option is also correct.