Question

If \[\ce{C_{(s)} + O_{2(g)} -> CO_{2(g)}}\], ΔH = - 396 kJ mol^-1, calculate heat liberated during formation of 0.154 kg of CO₂.

Options

• 1386.0 kJ

• 346.5 kJ

• 693.0 kJ

• 1039.5 kJ

Answer 1

1386.0 kJ

Explanation:

For formation of 1 mol CO₂ = 396 kJ heat is liberated

`therefore 154/44 "mol" ≡ (396 xx 154)/44` = 1386 kJ heat is liberated.