If much heat is released while mixing acid with water, what is the safe method?
Answer and explanation
Correct answer: Add acid slowly to water
Diluting a concentrated acid with water is strongly exothermic. If water is poured rapidly into acid, the small amount of water can heat suddenly, boil, and eject corrosive acid droplets. The safe laboratory rule is to add acid slowly to a larger volume of water while stirring continuously and using suitable protection. This spreads the heat through the water. Therefore option A is correct; heating the acid or avoiding stirring increases danger.
Frequently asked questions
What is the correct answer to this question?
Add acid slowly to water
Why is this the correct answer?
Diluting a concentrated acid with water is strongly exothermic. If water is poured rapidly into acid, the small amount of water can heat suddenly, boil, and eject corrosive acid droplets. The safe laboratory rule is to add acid slowly to a larger volume of water while stirring continuously and using suitable protection. This spreads the heat through the water. Therefore option A is correct; heating the acid or avoiding stirring increases danger.
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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