Why is it safer to add acid slowly into water while diluting acid?
Answer and explanation
Correct answer: Heat spreads gradually and splashing risk decreases
Dilution of concentrated acid with water is highly exothermic, so a considerable amount of heat can be released. Adding acid slowly to a larger quantity of water allows the heat to disperse through the water and prevents a sudden local temperature rise. This reduces violent boiling and dangerous splashing. Option A is correct. The safe laboratory rule is always ‘add acid to water’, never water to concentrated acid, with stirring and suitable protection.
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What is the correct answer to this question?
Heat spreads gradually and splashing risk decreases
Why is this the correct answer?
Dilution of concentrated acid with water is highly exothermic, so a considerable amount of heat can be released. Adding acid slowly to a larger quantity of water allows the heat to disperse through the water and prevents a sudden local temperature rise. This reduces violent boiling and dangerous splashing. Option A is correct. The safe laboratory rule is always ‘add acid to water’, never water to concentrated acid, with stirring and suitable protection.
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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