For this problem, we have to calculate the enthalpy of reaction (ΔH) using the given bond enthalpies.
H2 (g) + Cl2 (g) → 2 HCl (g)
Recall that the change of enthalpy for a chemical reaction (ΔH) can be calculated using bond energies:
To determine the enthalpy of reaction, we need to first see what bonds are present in the reactants and the products.
Estimate the enthalpy of reaction, ΔH rxn°, for each of the following reactions using the information provided. Show all work and circle your final answers.
H2 (g) + Cl2 (g) → 2 HCl (g) ΔH°rxn = ?
a. -461 kJ
b. -333 kJ
c. +201 kJ
d. +323 kJ
e. +492 kJ
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