Which is the safe method for mixing acid with water?
Answer and explanation
Correct answer: Add acid slowly into water
Dilution of a concentrated acid with water is usually exothermic, meaning that considerable heat is released. If water is poured into a small amount of concentrated acid, the water may 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 and using protection. Therefore option B is correct; the other methods increase splash, pressure, or heating hazards.
Frequently asked questions
What is the correct answer to this question?
Add acid slowly into water
Why is this the correct answer?
Dilution of a concentrated acid with water is usually exothermic, meaning that considerable heat is released. If water is poured into a small amount of concentrated acid, the water may 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 and using protection. Therefore option B is correct; the other methods increase splash, pressure, or heating hazards.
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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