(a) What are zeolites? Give any one of its use. (b) A U-tube is fille

1.	(a) What are zeolites? Give any one of its use. (b) A U-tube is filled with ferric hydroxide solution. Two platinum electrodes are introduced into the two limbs of the U-tube and an electric current is passed through the electrodes. What do you observe? Name the phenomenon.
Answer» (a) Zeolites are aluminosilicates having three dimensional structure. Zeolites are highly porous have cavities of different sizes. The catalytic behaviour of zeolite catalysts depends upon the size of the cavities in them, which usually varies from 260-740 pm. The reaction molecules of a particular shape and size can only enter and get absorbed. Thus Zeolites are called shape selective catalysts. (b) Colloidal particles move towards one or other electrode. Phenomenon is called electrophoresis.

(a) What are zeolites? Give any one of its use. (b) A U-tube is filled with ferric hydroxide solution. Two platinum electrodes are introduced into the two limbs of the U-tube and an electric current is passed through the electrodes. What do you observe? Name the phenomenon.

Answer»

(a) Zeolites are aluminosilicates having three dimensional structure. Zeolites are highly porous have cavities of different sizes. The catalytic behaviour of zeolite catalysts depends upon the size of the cavities in them, which usually varies from 260-740 pm. The reaction molecules of a particular shape and size can only enter and get absorbed. Thus Zeolites are called shape selective catalysts.

(b) Colloidal particles move towards one or other electrode. Phenomenon is called electrophoresis.

Discussion

No Comment Found

Related InterviewSolutions

How does it become possible to cause artificial rain by spraying silver iodide on the clouds?
Artificial rain is caused by spraying salt over clouds.
Define the following terms: (i) Desorption (ii) Critical micelle concentration (iii) Shape selective catalysis
What are Associated Colloids ? Give an example.
What do you understand by the terms : (i) CMC, (ii) Kraft's temperature, (iii) McBain micelle.
Explain the following :(i) Same substance can act both as colloids and crystalloids. (ii) Artificial rain is caused by spraying salt over clouds.
Define the following terms with an example in each: (i) Lyophobic colloids (ii) Homogeneous catalysis (iii) O/W emulsion
Some substances can act both as colloids and crystalloids. Explain.
Explain what is observed when : (i) A beam of light is passed through a colloidal solution. (ii) NaCl solution is added to hydrated ferric oxide sol. (iii) Electric current is passed through a colloidal solution.
How are the following colloidal solutions prepared ? (i) Sulphur in water, (ii) Gold in water.