* ''White vinegar,'' a weak acid, is about 5 percent acetic acid. It may remove hard water deposits from glass, rust stains from sinks, and tarnish from brass and copper.
* ''Lemon juice,'' another weak acid, contains citric acid, which can be used in much the same way as vinegar.
* ''Oxalic acid'' is effective as a rust remover.
* ''Phosphoric acid'' is often found in cleaning products that remove hard water deposits.
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* ''Hydrochloric and sulfuric acids'' are sometimes used in diluted concentrations in toilet bowl cleaners.
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* ''Hydrochloric and sulfuric acids'' are sometimes used in diluted concentrations in toilet bowl cleaners. A dilute sulfuric acid is also called muriatic acid and used to clean swimming pools.
* Manganese leaves brownish or blackish stains.
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* ''White vinegar,'' a weak acid, is about 5 percent acetic acid. It may remove hard water deposits from glass, rust stains from sinks, and tarnish from brass and copper.
* ''Lemon juice,'' another weak acid, contains citric acid, which can be used in much the same way as vinegar.
* ''Oxalic acid'' is effective as a rust remover.
* ''Phosphoric acid'' is often found in cleaning products that remove hard water deposits.
* ''Hydrochloric and sulfuric acids'' are sometimes used in diluted concentrations in toilet bowl cleaners.
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