In this experiment you will determine the enthalpy change, $$\(\Delta H_{r}\)$$, for the reaction shown. $$\[ \mathrm{NaOH}(\mathrm{aq})+\mathrm{CO}_{2}(\mathrm{~g}) \rightarrow \mathrm{NaHCO}_{3}(\mathrm{aq}) \quad \text { enthalpy change }=\Delta H_{\mathrm{r}} \]$$ You will react each of sodium hydroxide and sodium hydrogencarbonate with excess dilute sulfuric acid. You will determine the enthalpy change for each reaction, then use Hess's law to calculate $$\(\Delta H_{r}\)$$. Calculations Use your data to calculate the enthalpy change, $$\(\Delta H_{2}\)$$, in $$\(\mathrm{kJ} \mathrm{mol}^{-1}\)$$ of sulfuric acid, for the reaction of $$\(\mathrm{NaHCO}_{3}(\mathrm{~s})\)$$ with $$\(\mathrm{H}_{2} \mathrm{SO}_{4}(\mathrm{aq})\)$$. Show your working.

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