Question

The Ka for HF is 7.2 x 10^-4. What is ΔG at 25°C for a reaction mixture that is 1.5 x 10^-3 M in F–, 4.5 x 10^-2 M in HF with a pH of 2.75? The answer should be in kJ.

Answer 1

To calculate ΔG at 25°C for a reaction mixture of HF and F–, you need to determine the concentrations of HF and F– and use the equilibrium constant and the given Ka value to calculate ΔG.

Step-by-step explanation:

The given question is asking for the ΔG at 25°C for a reaction mixture that contains HF and F–. To solve this, we need to calculate the concentrations of HF and F– using the given information: [F–] = 1.5 x 10^-3 M and [HF] = 4.5 x 10^-2 M.

Then, we can use the equation ΔG = -RT ln(K), where K is the equilibrium constant. We can calculate K using the equation K = [F–]/[HF] and the given Ka value for HF. Finally, we substitute the values into the ΔG equation and solve for ΔG.