displacement reaction
Yes it is.
Ca + 2 HCl = CaCl2 + H2
Mg + H2CO3 = MgCO3 + H2
For 2HCl(g) ==> H2(g) + Cl2(g) the Keq = [H2][Cl2]/[HCl]^2
There are 2 sulfur atoms in the chemical reaction H2S plus SO2 plus H2.
It's a chemical reaction.
displacement reaction
It is an eothermic type of reaction.
synthesis reaction
This is a synthesis reaction.
Probably as a Displacement reaction
single replacement
Yes it is.
No. It is endothermic because it absorbs energy.
The answer is 0
For the reaction 2HCl(g) ==> H2(g) + Cl2(g), the Keq = [H2(g)][Cl2(g)]/[HCl(g)]^2