What Is the Enthalpy of Reaction D H Rxn for the Following

question 26

Multiple Choice

What is the enthalpy of reaction D H rxn for the following reaction?
SiO₂ (s) + 4 HF (g) SiF₄ (g) + 2 H₂ O ( ) D H rxn = ??
D H f (SiO₂ ) = - 910.9 kJ/mol D H f (HF) = - 273.0 kJ/mol D H f (SiF₄ ) = - 1614.9 kJ/mol D H f (H₂ O) = - 285.8 kJ/mol

• A) - 183.6 kJ/mol
• B) - 716.8 kJ/mol
• C) - 1002.6 kJ/mol
• D) - 3084.6 kJ/mol
• E) - 4189.4 kJ/mol

Identify the mechanisms of adjusting to long-run equilibrium, including recessionary and expansionary gaps.

Comprehend the role of nominal wages in the economy and their adjustment process.

Analyze the impact of aggregate demand and supply shifts on equilibrium in the short run and long run.

Recognize the factors that influence long-run aggregate supply and demand, including technological changes and resource availability.

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