Question

Which of the following is a suitable drying agent for hydrogen?

• A. $H_{2}S{O}_4$
• B. $CaC{l}_2$
• C. Both of the above
• D. None of the above

Answer 1

The correct option is B

$CaC{l}_2$

Concentrated Sulphuric acid is a good drying agent but cannot be used for drying hydrogen because it reacts with hydrogen to form water and sulfur dioxide.

$H_{2}S{O}_4+H_2⟶2H_{2}O+S{O}_2$