An acid-base indicator is a substance that changes color as the pH of the solution changes. Indicators work because they are weak acids which when in solution, exist in equilibrium with their ...

Save guides, add subjects and pick up where you left off with your BBC account. Neutralisation is the reaction of an acid with a base that results in the pH moving towards seven. It is a useful ...

An acid-base indicator is a substance that changes color as the pH of the solution changes. Indicators work because they are weak acids which when in solution, exist in equilibrium with their ...