MHT CET202310 May 2023Evening ShiftChemistryIonic EquilibriumActual
Calculate the pH of a buffer solution containing 0.01 M salt and 0.004 M weak acid. ( pK _ a =4.762 )
Options
- A4.36
- B4.76
- C5.16
- D5.36
Correct answer
C. 5.16
Step-by-step solution
aligned pH & = pK _ a + ₁₀ [ Salt ] [ Acid ] & =4.762+ ₁₀ 0.01 0.004 & =4.762+ ( ₁₀ 5- ₁₀ 2 ) & =4.762+(0.699-0.3010) & =4.762+0.398 & =5.16 aligned