Below is the list of enthalpies of formation of the compounds involved in the chemical reaction.
HCl: -92.3 kJ/mol
H2: 0
Cl2: 0
Both H2 and Cl2 do not have enthaply of formation because they are pure substances.
Since, in the reaction there are 2 moles of HCl,
Enthalphy of formation = enthalpy of products - enthalphy of reactant/s
= 0 - (-92.3)(2) = +184.6 kJ
Hence, the answer is the first choice.
D. hope this helps your question
Answer:
I know for a fact the correct answer is B
I believe the answer in here would be the law of multiple
proportions. The law states that whenever the same two elements merge to create
more than one compound, the different masses of one element that merge with the
same mass of the other element have a ratio that is in whole numbers.
Answer:
<span>law of multiple proportions</span>