Which of the Following Indicator(s) Would Be Most Suitable for the Titration

question 26

Multiple Choice

Which of the following indicator(s) would be most suitable for the titration of acetic acid (pK_a = 4.74) with NaOH? Your choices are:
I. bromothymol blue (transition range pH 6 to 8)
II. methyl red (transition range pH 4 to 6.3)
III. phenolphthalein (transition range pH 8.3 to 11)

• A) I only
• B) II only
• C) III only
• D) I or II only
• E) I, II, or III

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Definitions:

Issued Note

A financial instrument representing a promise to pay a specified amount of money at a future date.

Accrued Interest

Interest that has been earned but not yet received in cash or recorded as an asset on the balance sheet.

Note Receivable

A financial asset representing a written promise to receive a specific amount of money on a certain date or on demand.

Payment of Account

The process of settling a liability or an amount owed to a creditor, vendor, or supplier by making a cash or electronic payment.