What is the safe method of mixing acid with water?
Answer and explanation
Correct answer: Add acid slowly to water
The governing safety principle is controlled dilution of acid. Mixing concentrated acid with water is exothermic, so considerable heat may be released. The safe procedure is to add acid slowly to a larger quantity of water while stirring, allowing heat to disperse. Therefore, option A is correct. Adding water rapidly to concentrated acid can make the small amount of water boil suddenly and eject corrosive acid; hand mixing and hot oil are unsafe.
Frequently asked questions
What is the correct answer to this question?
Add acid slowly to water
Why is this the correct answer?
The governing safety principle is controlled dilution of acid. Mixing concentrated acid with water is exothermic, so considerable heat may be released. The safe procedure is to add acid slowly to a larger quantity of water while stirring, allowing heat to disperse. Therefore, option A is correct. Adding water rapidly to concentrated acid can make the small amount of water boil suddenly and eject corrosive acid; hand mixing and hot oil are unsafe.
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.
