Question
What are indicators? Discuss the Ostwald’s theory of acid base indicators and derive an expression relating the pH and the concentration of two forms of the indicator.
Answer :
Word Count : 261
Indicators are substances that exhibit different colors in acidic and basic media and are used to detect the endpoint of a titration. They function by undergoing a reversible chemical change in response to the hydrogen ion concentration of the solution. Most indicators are weak acids or weak bases, where the color change __________ ________ ______ _________ _______ __________ ______ _______ ______ _____.
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Indicators are substances that exhibit different colors in acidic and basic media and are used to detect the endpoint of a titration. They function by undergoing a reversible chemical change in response to the hydrogen ion concentration of the solution. Most indicators are weak acids or weak bases, where the color change __________ ________ ______ _________ _______ __________ ______ _______ ______ _____.
_________ ____ ___ __________ ______ ________.
________ _____ ________ ___ ___ _______ _________ ___ ____ _____.
__________ ______ ______ _____ _____ ____ __________ ____.
_____ ___ _____ ______ _____ _______ ______ ______ ___ _________ ____.
______ ________ _______ __________ _________ _________ _____ _______ ______ ________ ________.
______ __________ ___ ______ _______ ______ ______.
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