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A sample of nitric acid contains both H3O ions and NO3 ions. This sample has a pH

value of 1.
What is the color of methyl orange after it is added to this sample?

1 Answer

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The indicator will lead to a solution that has a red color. Methyl orange is an indicator used in titrations because it changes colors at all pH values. When in acidic solution it is red and in basic it is yellow. A pH of 1 is acidic, therefore a red solution.
User Rejoanul Alam
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