How much heat is absorbed when 40.00 g of C(s)reacts in the presence of excess SO₂(g)to produce CS₂(l)and CO(g)according to the following chemical equation? 5 C(s)+ 2 SO₂(g)→ CS₂(l)+ 4 CO(g)ΔH° = 239.9 kJ A) 159.8 kJ B) 239.9 kJ C) 798.7 kJ D) 1918 kJ

Question

Quizplus · Accepted Answer

The heat absorbed is directly proportional to the amount of C(s) reacting. Given that 5 moles of C(s) absorb 239.9 kJ, for 40.00 g of C(s) (which is 40.00 g / 12.01 g/mol = 3.33 moles), the heat absorbed is (3.33 moles / 5 moles) * 239.9 kJ = 159.8 kJ.

How Much Heat Is Absorbed When 40