Hydrofluoric acid (HF)has a K_a value of 7.2 $\times$ 10^-4.
a.0.250 mol of F^- ions (in the form of NaF)are added to 1.00 L of 0.100 mol L^-1 aqueous HF.Calculate the resulting pH.
b.To the solution produced in (a)is added 10.0 mL of 5.00 mol L^-1 NaOH.Calculate the resulting pH.

Question

Hydrofluoric acid (HF)has a K_a value of 7.2

\times

10^-4.
a.0.250 mol of F^- ions (in the form of NaF)are added to 1.00 L of 0.100 mol L^-1 aqueous HF.Calculate the resulting pH.
b.To the solution produced in (a)is added 10.0 mL of 5.00 mol L^-1 NaOH.Calculate the resulting pH.

Quizplus · Accepted Answer

The Answer of Hydrofluoric acid (HF)has a K_a value of 7.2 $\times$ 10^-4. a.0.250 mol of F^- ions (in the form of NaF)are added to 1.00 L of 0.100 mol L^-1 aqueous HF.Calculate the resulting pH. b.To the solution produced in (a)is added 10.0 mL of 5.00 mol L^-1 NaOH.Calculate the resulting pH.

Hydrofluoric Acid (HF)has a Ka Value of 7 ×\times× 10-4

Hydrofluoric Acid (HF)has a K_a Value of 7 $\times$ 10^-4