enthalpy of formation HBr

Question

Question

Estimate the enthalpy of formation of HBr gas.

H2(g) + Br2(g) --> 2HBr(g)

H-H bond = 436 kJ/mol
Br-Br bond = 192 kJ/mol
H-Br bond = 366 kJ/mol

science chemistry

Answer 1

Answer #1

The enthalpies of formation of substances, we have enough information to calculate the enthalpy ofany reaction by using

The enthalpy of formation of the reaction is 104 kJ/mol.

answered by: christy

Answer 2

Answer #2

ΔH° = Σ(v × ΔH_f°) (products) - Σ(v × ΔH_f°) (reactants)
2x366 - 192 -436 = 104 kJ/mol

answered by: Alina

Answer 3

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