Given: Calculate the standard enthalpy of formation of CuO(s).

Question

Given:  Calculate the standard enthalpy of formation of CuO(s).

Quizplus · Accepted Answer

The given string "11eaaf8d_c14a_b74f_892c_71c05b02134e_TB6420_00" is a hexadecimal representation of a UUID, which is not relevant to finding the enthalpy of formation of CuO(s).

The standard enthalpy of formation of CuO(s) is given by the following equation:
Cu(s) + 1/2O2(g) → CuO(s)
The standard enthalpy of formation of Cu(s) is 0 kJ/mol (by definition), and the standard enthalpy of formation of O2(g) is 0 kJ/mol (also by definition). Therefore, the standard enthalpy of formation of CuO(s) can be calculated by looking up the standard enthalpy of formation of CuO(s) and subtracting the standard enthalpies of formation of the reactants:
ΔHf°(CuO) = ΔHf°(CuO) - (ΔHf°(Cu) + 1/2 ΔHf°(O2))

Looking up the standard enthalpies of formation in a table, we find that ΔHf°(CuO) is -155 kJ/mol. Therefore, the answer is D.

Given: Calculate the Standard Enthalpy of Formation of CuO(s)