A Compound Has a PK_a of 7

question 18

Multiple Choice

A compound has a pK_a of 7.4. To 100 mL of a 1.0 M solution of this compound at pH 8.0 is added 30 mL of 1.0 M hydrochloric acid. The resulting solution is pH:

• A) 6.5.
• B) 6.8.
• C) 7.2.
• D) 7.4.
• E) 7.5.

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Definitions:

Contract Rate

The agreed-upon interest rate specified in a contract, particularly in loan agreements or bond indentures.

Bond Indenture

A legal contract specifying the terms and conditions between the bond issuer and the bondholders.

Effective Interest Rate

The actual return on an investment or the real rate of interest calculated annually after considering compounding.

Market Interest Rate

The market interest rate is the prevailing rate at which borrowers are willing to borrow money and lenders are willing to lend in the financial markets.