Question

Sulfuric acid will react with which of the following to form sulfur dioxide gas Select one: a. Sodium sulfite b. Thioacetamide c. Sodium sulfate d. Oxygen Clear my choice

Answer 1

Answer:

Sodium sulfite (Na2SO3)

Explanation:

Sulfuric acid is able to displace volatile acids from their corresponding salts and the acids displaced are unstable and they break down to give volatile products

For example, in to reaction of sulfuric acid and sodium sulfite; two processes occur

1. Sulfuric acid forms sodium sulfate and sulfurous acid

Na2SO3(s) + H2SO4(aq) -------> Na2SO4(aq) + H2SO3

2. The H2SO3 is unstable thereby decompose spontaneously to water and sulfur dioxide gas.

H2SO3 -----------> H2O(l) + SO2(g)

Final reaction gives;

Na2SO3(s) + H2SO4 (aq) ---------> Na2SO4(aq) + H2O(l) + SO2(g)