# 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?

Dec 17, 2016

$C a C {O}_{3} \left(s\right) + \Delta H \rightarrow C a O \left(s\right) + C {O}_{2} \left(g\right) \uparrow$

#### Explanation:

$\text{Moles of calcium carbonate}$ $=$ $\frac{100 \cdot g}{100.09 \cdot g \cdot m o {l}^{-} 1} = 1 \cdot m o l .$

And thus for:

CaCO_3(s) + DeltaH rarr CaO(s) + CO_2(g)uarr; $\Delta H = 178 \cdot k J \cdot m o {l}^{-} 1 \text{ of reaction as written}$

Given that it is endothermic reaction, we quote $\Delta {H}_{\text{rxn}} = + 178 \cdot k J \cdot m o {l}^{-} 1$.

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