A 50.0 mL sample of 0.155 M HNO₂(aq)is titrated with 0.100 M NaOH(aq).What is the pH of a solution after the addition of 25.0 mL of NaOH? (K_a of HNO₂ = 4.5 × 10^-4)

Question

Quizplus · Accepted Answer

The correct answer is A because the pH of a solution after the addition of 25.0 mL of NaOH is 3.02. This is because the reaction between HNO2 and NaOH is a neutralization reaction, which results in the formation of water and a salt. The pH of the solution will be determined by the concentration of the salt, which is determined by the concentration of the reactants and the volume of the solution.

A 500 ML Sample of 0