Consider a solution of 2.0 M HCN and 1.0 M NaCN (K_a for HCN = 6.2 $\times$10^-¹⁰).Which of the following statements is true?

Name: Consider a solution of 2.0 M HCN and 1.0 M NaCN (K a for HCN = 6.2 $\times$10 - 10 ).Which of the following statements is true?
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Quizplus · Accepted Answer

The solution is a buffer because it contains a weak acid (HCN) and its conjugate base (CN⁻). In a buffer solution, [OH⁻] is typically greater than [H⁺] due to the presence of the conjugate base, which can react with added H⁺ ions.

Consider a Solution of 2 ×\times× 10-10)

Consider a Solution of 2 $\times$ 10^-¹⁰)