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Consider a solution of 2.0 M HCN and 1.0 M NaCN (Ka for HCN = 6.2 1010). Which of the following ...

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Consider a solution of 2.0 M HCN and 1.0 M NaCN (Ka for HCN = 6.2 1010). Which of the following ...

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

▸ The solution is not a buffer because [HCN] is not equal to [CN^–].

▸ The pH will be below 7.00 because the concentration of the acid is greater than that of the base.

▸ [OH^–] > [H⁺]

▸ The buffer will be more resistant to pH changes from addition of strong acid than of strong base.

▸ All of these are false.

Textbook

Chemistry: An Atoms First Approach

Edition: 3^rd

Authors: Zumdahl, DeCoste

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