Question

1) The enthalpy change (∆H) of each of the two reactions is given as follows: A...

1) The enthalpy change (∆H) of each of the two reactions is given as follows:

A + B = 1/2C + 1/2D ∆H = - 30 J/mol

C + D = 2E + 2F ∆H = 80 J/mol

What is the enthalpy change (∆H) of the following reaction?

A + B = E + F ∆H = ? J/mol

2) The enthalpy change (∆H) of each of the two reactions is given as follows:

A + B = C + D ∆H = 50 J/mol

A + B = E + F ∆H = -70 J/mol

What is the enthalpy change (∆H) of the following reaction?

E + F = C + D   ∆H = ? J/mol

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