Write the reactions for the Standard heat of formation of these from their elements in the standard state:
a)HNO3(l)
b) Ca(NO3)2(l)
c) NaOH (s)
d) H2O(l)
Can anyone please verify the following answers...
a) 1/2 H2(g) + 1/2 N2(g) + 3/2 O2(g) -----> HNO3(l)
b) Ca(s) + N2(g) + 3O2(g) -----> Ca(NO3)2(l)
c) Na(s) + 1/2 O2(g) + 1/2 H2(g) -----> NaOH(s)
d) H2(g) + 1/2 Os(g) -----> H2O(l)
2006-11-24 04:08:12 · 2 answers · asked by smithwss 2 in Science & Mathematics ➔ Chemistry
Thank You Gogs and Ann G!
2006-11-24 08:21:08 · update #1
Yep - you got 'em. Just remember you always form only 1 mole of the compound.
2006-11-24 07:09:02 · answer #1 · answered by The Old Professor 5 · 0⤊ 0⤋
The reactions given here by you are very correct. As the std. heat of formation of a compound is the the heat liberated at the time of formation of per mole of the compound from it's constituent elements in their std. state at std. temperature.
It was a nice pleasure to help you.
2006-11-24 04:23:18 · answer #2 · answered by Gogs 1 · 0⤊ 1⤋