Why is it considered safe to add acid slowly into water during dilution?
Answer and explanation
Correct answer: Heat spreads gradually and splashing is reduced
Dilution of a concentrated acid is highly exothermic because hydration of its ions releases considerable heat. Adding acid slowly to a larger quantity of water allows the heat to disperse gradually and reduces the chance of local boiling, splashing, and burns. Therefore option A is correct. The acid does dissolve in water, is not made solid, and dilution does not itself neutralise it.
Frequently asked questions
What is the correct answer to this question?
Heat spreads gradually and splashing is reduced
Why is this the correct answer?
Dilution of a concentrated acid is highly exothermic because hydration of its ions releases considerable heat. Adding acid slowly to a larger quantity of water allows the heat to disperse gradually and reduces the chance of local boiling, splashing, and burns. Therefore option A is correct. The acid does dissolve in water, is not made solid, and dilution does not itself neutralise it.
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.
