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Extremely acidic or basic materials are called “reactive”, and can cause severe burns.Examples include automobile battery acid, which is very acidic, and drain cleaner, which is very alkaline.The p H of 8 is 10 times more alkaline than the p H of 7, and the p H of 9 is 100 times more alkaline than the p H of 7, and so on.Buffer solutions are equilibrium systems that resist changes in p H upon addition of an acid or alkaline.Strong acids and alkalis can also adversely affect dyes.

Mixing acids and bases can cancel out their extreme effects, much like mixing hot and cold water can “even out” water temperature.

Each detergent formulation has maximum effectiveness at a specific p H value.

For example, an acid solution is needed to remove metal oxide, such as rust, and an alkaline solution may be needed to clean a heavily soiled, solution-dyed olefin carpet in a rental unit.

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