Ok so this Q is really easy.Its finding the heat of formation of C2H6 which is fine bt i have to write out an eqn for C2H6 and i just dont know how to do it!
Im given 3 other eqns which are C+O2----------->Co2, H2+1/2O2----------->H2O, "C2H6+7O2-------->4CO2+6H2O.
I know how to find the heat of formation i just need to write the chemical eqn for C2H6 first.Its not right to just say 2C+3H2-------->C2H6,is it? Thanks!