HW 8.57

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Sarah Clemens 1B
Posts: 19
Joined: Fri Sep 29, 2017 7:03 am

HW 8.57

Postby Sarah Clemens 1B » Sun Jan 21, 2018 9:28 pm

Can someone explain how you would approach this question?

Jessica Jones 2B
Posts: 80
Joined: Fri Sep 29, 2017 7:04 am

Re: HW 8.57

Postby Jessica Jones 2B » Sun Jan 21, 2018 9:32 pm

To do this problem, you have to manipulate the coefficients to be able to cancel out and result in the end equation they want. Also keep in mind that when you multiply the equation by a number you also multiply the deltaH value by the same number. Also when you switch the products to reactants, vice versa, you change the sign of deltaH! The solutions manuals has the coefficients you should be multiplying by if you are still confused. Then just add/subtract enthalpy values.

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