An aqueous solution has pH 12 and feels soapy. What is the safest conclusion?
Answer and explanation
Correct answer: It may be basic and caustic
On the pH scale, a value of 12 is far above 7 and therefore indicates a strongly basic solution. A slippery or soapy feel is also commonly associated with bases, although touching an unknown chemical is unsafe. Such a solution may be caustic and can damage skin, so it should be handled with protective equipment. Thus option A is the safest conclusion.
Frequently asked questions
What is the correct answer to this question?
It may be basic and caustic
Why is this the correct answer?
On the pH scale, a value of 12 is far above 7 and therefore indicates a strongly basic solution. A slippery or soapy feel is also commonly associated with bases, although touching an unknown chemical is unsafe. Such a solution may be caustic and can damage skin, so it should be handled with protective equipment. Thus option A is the safest conclusion.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
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