The Student Room Group

enthalpy chemistry

hiii again
the question is to work out the enthalpy change!

formation values:
ch4= -75
h2o=-242
CO= -111
H2= 0
kjmol-1

equation is

ch4+h2o-----> co + 3h2

answer is 206 kJ mol–1


i drew the arrows up

then drew one arrow towards H2

75 - 211 - 242 = -278??

why am i wrong TT____TT

please help

i'm usually good at enthalpy, i really am idk what the problem here is
(edited 4 years ago)
good morning pls help thank you
:blushing:
:blow:

Quick Reply

Latest