What is the correct method when mixing acid with water?
Answer and explanation
Correct answer: Add acid slowly to water
The governing safety principle is controlled dilution. Mixing a concentrated acid with water releases considerable heat. Adding acid slowly to a larger volume of water, while stirring carefully, allows the heat to disperse and reduces sudden boiling or splashing; hence option A is correct. Adding water to acid can make a small amount of water heat rapidly and eject corrosive acid. Heating beforehand is 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. Mixing a concentrated acid with water releases considerable heat. Adding acid slowly to a larger volume of water, while stirring carefully, allows the heat to disperse and reduces sudden boiling or splashing; hence option A is correct. Adding water to acid can make a small amount of water heat rapidly and eject corrosive acid. Heating beforehand is 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.
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