H2+Cl2 overset to 2HCl, DeltaH = 194kJ I...

`H_2+Cl_2 overset to 2HCl, DeltaH = 194kJ` In this reaction heat of formation of HCl in kJ is

`+914 kJ`

`+97 kJ`

`-97 kJ`

-194 kJ

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