A buffer solution is prepared by mixing 0.2 M sodium acetate and 0.1 M acetic acid. If pK _ a for acetic acid is 4.7 , find the pH .

Step-by-step solution

Using Henderson's equation, aligned & pH = pK _ a + ₁₀ [ Salt ] [ Acid ] & pH =4.7+ ₁₀ 0.2 0.1 & pH =4.7+ ₁₀ 2=4.7+0.3010=5.001 aligned