Multiple choice

The correct method to dilute acid is

  1. by adding water into concentrated acid

  2. by adding concentrated acid in to water gradually with stirring

  3. both (1) & (2)

  4. none of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Diluting concentrated acid is highly exothermic. Adding acid to water allows the water to absorb the heat, whereas adding water to acid can cause the water to boil instantly and splash concentrated acid.