Question

Acetic acid was added to a solid X taken in a test tube. A colourless and odourless gas was evolved. The gas was passed through lime water which did not turn milky. However, the gas burnt with a pop sound. It was concluded that_________

• A. Solid X is sodium and the gas evolved is $C{O}_2$
• B. Solid X is sodium and the gas evolved is $H_2$
• C. Solid X is sodium acetate and the gas evolved is $C{O}_2$
• D. Solid X is sodium chloride and the gas evolved is $H_2$

Answer 1

The correct option is B Solid X is sodium and the gas evolved is $H_2$

Reaction:
$2C{H}_{3}COOH+2Na\to 2C{H}_{3}COONa+H_2$

Sodium is a reactive metal and it reacts with acids to evolve hydrogen gas .