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An aqueous solution feels soapy and shows pH 12. Why can touching it directly be dangerous?

Answer and explanation

Correct answer: It may be strongly basic and caustic

A pH of 12 is far above neutral pH 7 and indicates a strongly basic solution. The slippery or soapy feel is also consistent with an alkali, but it must not be used as a safety test. Concentrated or sufficiently strong bases can break down skin oils and damage tissue, causing irritation or chemical burns. Therefore direct contact is unsafe and protective equipment is needed. Option A is correct.

Related tags

Strong BasesPhChemical SafetyAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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