Keq = [H2O][CO]
[H2][CO2]
-149 kJ
6
The entropy increases.
Evaporating -apex
the subscript g after H2O indicates that it is water vapour, a gas, which is what the subscript g stands for. If there was a subscript s after the H2O, it would mean that H2O is in a solid form as ice. If there was a subscript l it means that H2O is in the liquid form as water.
CH4g + H2Og COg + 2H2g
Pretty sure it's called it's Boiling Point. This happens when you've put enough heat energy into the substance to change it into a gas. An example might be liquid water which you heat until it boils to make water vapour. Water vapour and all other elements you heat will have the same name (like water is still H2O, no matter what form it's in) but it will have a little g next to it, meaning gaseous. For example: Water + heat = H2Og It's a bit more complicated at higher levels because you have to consider the air composition but it works as an explanation.
Steam is the gaseous state of water which chemically known as H2O, which is two parts Hydrogen and one part Oxygen.