What is the correct reason for adding concentrated sulphuric acid slowly to water during dilution?
Answer and explanation
Correct answer: Dilution releases a lot of heat and may cause splashing
The governing concept is that dilution of concentrated sulphuric acid is highly exothermic: considerable heat is released when the acid mixes with water. If water is poured rapidly into acid, the small amount of water may heat suddenly, boil, and throw corrosive acid droplets outward. Therefore, acid is added slowly to a larger volume of water with stirring and suitable protection. The other options describe false changes or incorrectly deny dissolution.
Frequently asked questions
What is the correct answer to this question?
Dilution releases a lot of heat and may cause splashing
Why is this the correct answer?
The governing concept is that dilution of concentrated sulphuric acid is highly exothermic: considerable heat is released when the acid mixes with water. If water is poured rapidly into acid, the small amount of water may heat suddenly, boil, and throw corrosive acid droplets outward. Therefore, acid is added slowly to a larger volume of water with stirring and suitable protection. The other options describe false changes or incorrectly deny dissolution.
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.
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
