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Calculate the standard enthalpy change for the reaction 2A+B⇌2C+2D Use the following data: Substance ΔH∘f (kJ/mol)...

Calculate the standard enthalpy change for the reaction

2A+B⇌2C+2D

Use the following data:

Substance ΔH∘f
(kJ/mol)
A -243
B -397
C 191
D -525

Solutions

Expert Solution

standard enthalpy change =  enthalpy of ( products - reactants)

                                          = 2C + 2D - ( 2A+B)

                                          =   (2 x 191) + (2 x -525) - [ (2 x -243) + (-397) ]

                                         = + 215 kJ/mol

queen_honey_blossom answered 6 months ago
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