Question

Which of the following compound can absorb maximum amount of hydrogen gas in presence of metal catalysts
​

Answer 1

The colloidal solution of palladium can absorb the maximum amount of hydrogen gas during the presence of metal catalysts.

• A colloid is a heterogeneous system in which one material is dispersed, in another substance called dispersion layer, as very fine particles.  
• Generally, the Colloidal particles in comparison to small molecules are bigger, but they are tiny enough to be suspended.
• Because of their small size, the colloidal particles have a large surface area per unit mass.
• Thus, the palladium's colloidal solution adsorbs larger amounts of hydrogen gas as the colloid surface area would be greater.