If water is suddenly added to concentrated acid, what is the main danger?
Answer and explanation
Correct answer: Sudden heat can splash acid
The governing concept is that dilution of a concentrated acid is highly exothermic, meaning it releases considerable heat. If a small amount of water is poured suddenly into acid, the water may heat and boil locally, causing the acid to splash violently. Therefore option A is correct. The solution does not freeze, acid cannot change into sugar, and option D is wrong because heat is released. For safety, acid should be added slowly to water with stirring.
Frequently asked questions
What is the correct answer to this question?
Sudden heat can splash acid
Why is this the correct answer?
The governing concept is that dilution of a concentrated acid is highly exothermic, meaning it releases considerable heat. If a small amount of water is poured suddenly into acid, the water may heat and boil locally, causing the acid to splash violently. Therefore option A is correct. The solution does not freeze, acid cannot change into sugar, and option D is wrong because heat is released. For safety, acid should be added slowly to water with stirring.
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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