WBCS.LIVE practice question

Chemical formula for sulfurous acid is

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. H2SO4
  2. H2SO3
  3. H3SO3
  4. H3SO4

Correct answer and explanation

Correct answer: H2SO3

Explanation: āœ… Correct Answer: B. H2SO3 šŸ“š Explanation: The chemical formula for sulfurous acid is H2SO3. It is a weak and unstable acid that is formed when sulfur dioxide (SO2) dissolves in water. It should not be confused with sulfuric acid, which has the formula H2SO4. Sulfurous acid is commonly used as a reducing agent and disinfectant.