Remember the demonstration video where a base and an acid were mixed with universal indicator.Use your knowledge of neutralization reactions to explain why the solution eventually turned green.
Question
Remember the demonstration video where a base and an acid were mixed with universal indicator.Use your knowledge of neutralization reactions to explain why the solution eventually turned green.
Solution
A neutralization reaction occurs when an acid and a base react with each other to produce a salt and water. The universal indicator is a pH indicator composed of a solution of several compounds that exhibits several smooth color changes over a wide range pH values to indicate the acidity or alkalinity of solutions.
In the demonstration video, when the base and the acid were mixed together, they neutralized each other. This means that the amount of hydrogen ions (from the acid) and hydroxide ions (from the base) became equal, resulting in the formation of water.
The universal indicator changes color depending on the pH of the solution it is in. In this case, when the acid and base were mixed together, the solution became neutral (neither acidic nor basic). The pH of a neutral solution is 7.
The universal indicator turns green at pH 7, which is
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