Sample Problem 6.7
Using Hess’s Law to Calculate an Unknown DH
SOLUTION:
PLAN:
Equations A and B have to be manipulated by reversal and/or multiplied by factors in order to sum to the target equation.
Multiply Equation B by 1/2 and reverse it.
DHB = -90.3 kJ
DHrxn = -373.3 kJ
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