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Homework Question 8.63 (c)
Posted: Sat Jan 13, 2018 6:53 pm
by Tia Tomescu 2D
I checked my equations many times, but my value always comes to -38.72kJ while the answer is 15.28kJ. The previous two questions, (a) and (b) are similar to (c) and I used the same method: enthalpy of products - enthalpy of reactants. Does anyone know how to solve this?
Re: Homework Question 8.63 (c)
Posted: Sat Jan 13, 2018 7:44 pm
by Curtis Tam 1J
Smh tomato. Check solution manual errors.
Re: Homework Question 8.63 (c)
Posted: Sat Jan 13, 2018 9:31 pm
by Miranda 1J
you do DH= [(2DHf K2S)+(2DHf H2O)] - [(DHf H2S)+(2DHf KOH)] this should be =[-417.5 kJ/mol + 2(-285.83 kJ/mol)] - [-39.7 kJ/mol + 2(-482.37 kJ/mol)] = +15.28 kJ/mol
Hope that makes sense