hess's law problem (thanks in advance)?

  • Thread starter Thread starter yeah
  • Start date Start date
Y

yeah

Guest
At 25oC, the following heats of reaction are known:

2C2H2(g)+5O2(g) -> 4CO2(g) + 2H2O(l) ?H = -2,600 kJ
C(s) + O2(g) -> CO2(g) ?H = -394 kJ
2H2(g) + O2(g) -> 2H2O(l) ?H = -572 kJ

At the same temperature, calculate ?H for the reaction:

2C(s) + H2(g) -> C2H2(g)

any tips or hits would be fantastic
 
Back
Top