What kind of chemical reaction these equations represent. S+Cl2=SCl2
2C2H2+5O2=4CO2+2H2O
CH4=C+2H2

Nonmetal halogen family atmoic mass 35

When hydrochloric acid reacts with potassium hydroxide solution, the following reaction occurs. hcl (aq) + koh (aq) h2o (l) + kcl (aq) the reaction gives off heat energy, so it is an reaction.

The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?