Multiple choice

8 g of sulphur is burnt to form SO2, which is oxidised by Cl2 water. The solution is then treated with BaCl2 solution. The amount of BaSO4 precipitated would be

  1. 1 mole

  2. 2 mole

  3. 3 mole

  4. 0.75 mole

  5. 0.25 mole
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

The required reaction is S + O2→ SO2 + Cl2 (water) → SO42– + BaCl2→BaSO4 +2Cl–. Moles of sulphur = (8 / 32) = (1 / 4),  moles of SO2. Therefore, moles of BaSO4 precipitated = 0.25. (applying principle of atom conservation). Hence, this is a correct option.

Keep practicing — related questions