Use the data below to calculate ?G Use the data below to calculate ? (standard t

Question

Use the data below to calculate ?G

Use the data below to calculate ? (standard temperature and pressure) for each of the following reactions. Then determine whether each reaction is spontaneous at 230.0 K. Complete parts (a), (b), (c), and (d) below. (a) 2H2S(g) + 3O2(g) = 2H2O(g) + 2SO2(g) (b) 2SO2(g) + O2(g) = 2SO3(g) (c) SO3(g) + H2O(l) = H2SO4(l) (d) S(g) + O2(g) = SO2(g) I get that they are all spontaneous and I got all of part (a) correct, but it is not accepting my answers for the other parts. Please help. (a) -1002kJ correct (b) -154.6kJ wrong (c) -98.01kJ wrong (d) -548.7kJ wrong

Explanation / Answer

Solution :

?Gf0=?m?Gf0products??n?Gf0reactants

For Part b.

2SO2(g) + O2(g) = 2SO3(g)

?Gf0= [2 mol* -371.1 kJ/mol ] - [ (2mol * -300.1kJ/mol ) + (1 mol * 0kJ/mol)]

?Gf0= -742.2kJ + 600.2 kJ +0

?Gf0= -142kJ

For part c

SO3(g) + H2O(l) = H2SO4(l)

?Gf0= [1 mol* -690.0 kJ/mol ] - [ (1mol * -371.1kJ/mol ) + (1 mol * -237.2kJ/mol)]

?Gf0= -690.0 kJ - (-371.1kJ -237.2kJ)

?Gf0= -690.0 kJ +608.3 kJ

?Gf0= -81.7kJ

For part d

S(g) + O2(g) = SO2(g)

?Gf0= [1 mol * -300.1kJ/mol ] - [ 1 mol * 236.7 kJ/mol + 1 mole *0kJ/mol]

?Gf0= -300.1kJ -236.7 kJ

?Gf0= -536.8 kJ

Related Questions

Navigate

• Browse (All)
• Browse U
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.