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Chapter 11: Q11.3-25 P (page 477)

(a) Which is the stronger acid-the acidic form of the indicator bromocresol green or the acidic form of methyl orange?

(b) A solution is prepared in which bromocresol green is Green, and methyl orange is orange. Estimate the pH of this solution.

Short Answer

Expert verified

Methyl orange is more acidic than the bromocresol green indicator.

Step by step solution

01

Indicator

An indicator is a chemical substance that alters color when an acid or base is present. Indicators are often mildly acidic or basic and originate from plant pigments.

02

Methyl orange is stronger acid in an acidic form.

It is used in the strong acid weak base titration. Methyl orange acts as a strong acid in this type of titration. It changes its primary color into acidic color. The pH of the solution, prepared from bromocresol green and methyl orange, is 3.5 to 4.5.

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