MHT CET20249 May 2024Evening ShiftChemistryIonic EquilibriumActual
Calculate the pH of buffer solution containing 0.04 M NaF and 0.02 MHF [ pK _a=3 142 ] .
Options
- A4.5
- B3.4
- C2.6
- D5.1
Correct answer
B. 3.4
Step-by-step solution
0.04 M NaF and 0.02 M HF forms an acidic buffer. aligned pH & = pK _ a + ₁₀ [ Salt ] [ Acid ] & =3.142+ ₁₀ (0.04) (0.02) & =3.142+0.3010 & =3.44 3.4 aligned