If universal indicator is added to a solution it changes to a colour that shows the pH of the solution. Universal indicator is a mixture of a variety of other indicators and can be used to measure ...

An acid-base indicator is a substance that changes color as ... H+ + A- Universal indicator is a wide range indicator and is composed of several different indicators. This allows it to exhibit a wide ...

The pH scale measures how strongly acidic or alkaline a solution is using a set of values from pH 0 to pH 14. When pure water is dropped into a solution of universal indicator, the indicator stays ...