The enthalpy associated with the formation of one mole quantities of calcium oxide, and carbon dioxide, from calcium carbonate is +178*kJ. How do we represent this reaction symbolically?

1 Answer
Dec 17, 2016

CaCO_3(s) + DeltaH rarr CaO(s) + CO_2(g)uarr

Explanation:

"Moles of calcium carbonate" = (100*g)/(100.09*g*mol^-1)=1*mol.

And thus for:

CaCO_3(s) + DeltaH rarr CaO(s) + CO_2(g)uarr; DeltaH=178*kJ*mol^-1" of reaction as written"

Given that it is endothermic reaction, we quote DeltaH_"rxn"=+178*kJ*mol^-1.

I can think of one industry where the reaction is utilized on a monumental scale. Can you identify it?