Chapter 8, Problem 8.15P

Use the enthalpy function of APEx to calculate $\Delta \hat{H}$for each of the processes given below and check your solution to Part (a) by using the heat capacity tabulated in Table B.2. (Include units in your solutions.) Your spreadsheet cell entry for Part (a) should be “=Enthalpy(“N2”,25,700)”.

   $N_2\left(g,25°C\right)\to N_2\left(g,700°C\right)$

   $H_2\left(g,800°F\right)\to H_2\left(g,77°F\right)$

   $H_{2}O\left(g,20°C\right)\to H_{2}O\left(g,80°C\right)$

   $H_{2}O\left(l,20°C\right)\to H_{2}O\left(l,80°C\right)$

Ferric oxide $\left(s,275K\right)\to F{e}_2{O}_3\left(s,438K\right)$