# Problem: Using data from Appendix C in the textbook, write the equilibrium-constant expression and calculate the value of the equilibrium constant and the free-energy change for these reactions at 298 K .NaHCO3(s)  ⇌  NaOH(s) + CO2(g)What is the free-energy change for this reaction at 298 K?

###### FREE Expert Solution

NaHCO3(s)  ⇌  NaOH(s) + CO2(g)

*solids are included in the K expression

*since gas is given we will use Kp and pressure

$\mathbf{K}\mathbf{=}\frac{\mathbf{products}}{\mathbf{reactants}}\phantom{\rule{0ex}{0ex}}\overline{){\mathbf{K}}_{\mathbf{p}}\mathbf{=}{\mathbf{P}}_{{\mathbf{CO}}_{\mathbf{2}}}}$

We can use the following equation to solve for ΔG˚rxn:

The values for ΔG˚f can be looked up in textbooks or online:

91% (70 ratings) ###### Problem Details

Using data from Appendix C in the textbook, write the equilibrium-constant expression and calculate the value of the equilibrium constant and the free-energy change for these reactions at 298 K .

NaHCO3(s)  ⇌  NaOH(s) + CO2(g)

What is the free-energy change for this reaction at 298 K?