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GK QUESTION#3194

What is the correct method for diluting a concentrated acid with water?

  1. AThe water must be added to the acid.
  2. BThe water must be heated before mixing.
  3. CThe acid must be heated before mixing.
  4. DThe acid must be slowly added to the water.Correct answer
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Answer

D. The acid must be slowly added to the water.

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Explanation

When diluting a concentrated acid, add the acid slowly to water with stirring. Dilution releases heat; adding water into concentrated acid can produce intense local heating and splashing. Heating either liquid first is not the correct method.

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