THERMODYNAMICS: Calculate the value of AH (in kJ) for the reaction, 2AR3 (g) + Q (s) → A2R4 (g) + QR2 (s) given the following hypothetical thermochemical equations: 2AR3 (g) + 2AX (g) → A2R4 (g) +...

Extracted text: THERMODYNAMICS: Calculate the value of AH (in kJ) for the reaction, 2AR3 (g) + Q (s) → A2R4 (g) + QR2 (s) given the following hypothetical thermochemical equations: 2AR3 (g) + 2AX (g) → A2R4 (g) + 2XAR (g) AH = -87.1 kJ AX (g) + ½R2 (g) → XAR (g) AH = -162.3 kJ Q (s) + R2 (g) –→ QR2 (s) AH = -503.7 kJ (Round off the final answer to ONE decimal place. Do not include the unit.)