Question: Given reaction A + 2 B 3 C + 4 D with following standard enthalpies of formation H f 0 : A = 10.0 kJ/mol,

Given reaction A + 2 B 3 C + 4 D with following standard enthalpies of formation H_f⁰: A = 10.0 kJ/mol, B = 5.0 kJ/mol, C = 2.0 kJ/mol, D = 12.0 kJ/mol. What is the enthalpy change if 2 moles of B are used in the reaction?

a. 34.0 kJ

b. 68.0 kJ

c. 34.0 kJ

d. 68.0 kJ

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