What Is the PH at the Equivalence Point of a Weak

question 70

Multiple Choice

What is the pH at the equivalence point of a weak base-strong acid titration if 20.00 mL of NaOCl requires 28.30 mL of 0.50 M HCl to reach the equivalence point? K_a = 3.0 × 10^-8 for HOCl.

• A) 0.30
• B) 3.18
• C) 3.76
• D) 4.03

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Definitions:

Compounding

The process in which the value of an investment increases because the earnings on an investment, both capital, and interest, earn interest as time passes.

Simple Interest

Interest calculated only on the principal amount of a loan or deposit, without compounding.

Note Payable

A formal written agreement to pay a specified amount of money, including interest, by a certain date, recorded as a liability on the balance sheet.

Original Principal

The initial amount of debt or loan before any interest or fees are added; it is the base amount on which interest calculations are made.