Question

Using standard heat of formation calculate satandard enthalphy of caco3 gives cao + co2

Answer 1

mark me brainliest answer pls

There is missing information
necessary to answer this question.
you need the standard enthalpies
of formation of the other
substances. Also I am assuming
the equation is CaCO3(s)--> CaO
(s) + CO2(g)
In any case, you need to use the
formula for enthalpy of reaction:
ΔH reaction= (ΣΔproducts)-
(ΣΔreactants)
In a chemistry book, I found that
enthalpy of the other molecules
ΔH for CaCO3(s)= −1206.9 kj/
mole
ΔH for CO2(g)= −393.509 kj/mol
Set up the equation and plug the
values
ΔH reaction= [(ΔHCO2) +
(ΔHCaO)] - [(ΔHCaCO30]
149.2 kj= [(-393.509) + (ΔHCaO)] -
[(-1206.90]
ΔHCaO= 149.2 - 1206.90 +
393.509= -664.191 kj/mol