List of top Chemistry Questions on Buffer Solutions asked in AP EAMCET

100 mL of 0.1 M HA (weak acid) and 100 mL of 0.2 M NaA are mixed. What is the pH of the resultant solution? \((K_a \text{ of HA is } 10^{-5}, \log 2 = 0.3)\)

Equal volumes of \(0.5 \, N\) acetic acid and \(0.5 \, N\) sodium acetate are mixed. What is the pH of resultant solution?
\[ (pK_a \text{ of acetic acid } = 4.75) \]

One litre of $0.15\, M\, Na _{2} SO _{3}$ aqueous solution is mixed with $500\, mL$ of $0.2\, M\, K _{2} Cr _{2} O _{7}$ aqueous solution in acid medium. What is the number of moles of $K _{2} Cr _{2} O _{7}$ remaining in the solution after the reaction?