If a bleach had the pH of 11 what colour would show for the following indicators.a) methyl orangeb) universal indicator
Question
If a bleach had the pH of 11 what colour would show for the following indicators?
a) methyl orange
b) universal indicator
Solution
a) Methyl Orange: In a solution with a pH of 11, methyl orange would appear yellow. This is because methyl orange changes color from red to orange under acidic conditions (pH < 3.1) and from yellow to orange under basic or alkaline conditions (pH > 4.4). Since 11 is a basic pH, the color would be yellow.
b) Universal Indicator: A universal indicator changes colors across a wide range of pH levels. At a pH of 11, a universal indicator would appear blue-violet. This is because the universal indicator turns blue at pH levels between 10.5 and 11.6, and turns violet at pH levels between 11.6 and 14. Since 11 falls within the blue range, the color would be blue-violet.
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