[TF2]

for CuSO4.5H2O(s) is -2278 jk/mole
What is the chemical equation to whihc this applies
Is it

1)Cu(s) + S(s) +5H2O(g) +2O2(g) ---->CuSo4.5H2O(S)

2) 2Cu(s) + 2SO2(g) +5H2O(g) ---->2CuSo4.5H2O(S)

3) 2Cu(s) + 2SO2(g) +5H2O(g) ---->2CuSo4.5H2O(S)

4) Cu(s) + SO4(g) +5H2O(g) ---->CuSo4.5H2O(S)

5) Cu(s) + S(s) + 5/9 O2(g)+5H2(g) ---->CuSo4.5H2O(S)

6) Cu(s) + S(s) + 9/2 O2(g)+5H2(g) ---->CuSo4.5H2O(S)

[Borek]

Simply apply the definition.

[TF2]

im getting number 4....is this correct?

[Borek]

What is the definition of the standard enthalpy of formation?

[TF2]

are you asking or do you know?

[Borek]

I know, but seems to me you have no idea.

[TF2]

well when you start a reply with what is....and ended it with a question im guessing you are asking, instead of helping. And i asked what is the chemical formula not the definition. Anyway ill go ask someone else who actually knows and stop wasting my time with your nonsense

[sjb]

OK then, what do you believe the definition of the standard enthalpy of formation is?

Why have you chosen 4, rather than say 5?

S

[Borek]

well when you start a reply with what is....and ended it with a question im guessing you are asking, instead of helping. And i asked what is the chemical formula not the definition. Anyway ill go ask someone else who actually knows and stop wasting my time with your nonsense

I was trying to help you find out the correct answer on your own. But if you don't want to be helped - be it.