What Is the PH of a Buffer That Is 0

question 62

Multiple Choice

What is the pH of a buffer that is 0.88 M HCN(aq) and 0.53 M NaCN(aq) ? The K_a of HCN is 6.2 × 10^-10.

• A)8.99
• B)9.21
• C)9.43
• D)4.79

---

Definitions:

Intra-entity Gross Profit

The profit recognized on transactions carried out between divisions or departments within the same company.

January 1 Retained Earnings

The amount of net income left over for a business at the start of a new calendar year after all dividends have been paid out to shareholders.

Equity Method

An accounting technique used to record investments in which the investor has significant influence over the investee but does not have full control.

Intra-entity Gross Profit

The profit recognized by entities within the same corporation on transactions among themselves, which may not be realized from an external perspective until the goods are sold to an outside party.