P Block Elements Question 381

Question: Conc. $ H_2SO_4 $ is diluted

[Pb. CET 2001]

Options:

A) By adding water in $ H_2SO_4 $

B) By adding $ H_2SO_4 $ in water

C) By adding glacial acetic acid in $ H_2SO_4 $

D) None of the above

Show Answer

Answer:

Correct Answer: B

Solution:

Concentrated $ H_2SO_4 $ is diluted by adding the conc. $ H_2SO_4 $ in the water drop by drop with constant stirring because it is an exothermic reaction and by doing so heat is generated slowly and dissipated in the atmosphere.