Answer to Question #310950 in General Chemistry for Nicole

Question

2. Calculate the AH for the reaction:

CS2 (1) + 2 O2 (g) CO2 (g) + 2 SO2 (g)

Given:

AHCO2 (g) = -393.5 kJ/

mol;

AHSO2 = -296.8 kJ/mol;

AHCS2 (1) = 87.9kJ/mol

Answer 1

CS₂ + 2O₂(g) = CO₂(g) + 2SO₂(g)

$\Delta$ H_reaction = $\Delta$ H_CS2 + $\Delta$ H_CO2 + 2 * $\Delta$ H_SO2 = 87.9 + (-393.5) + 2 * (-296.8) = 87.9 - 393.5 - 593.6 = -899.2 kJ/mol.

Answer: -899.2 kJ/mol.