Chemisorption

Q.

Does Chemisorption Occur Rapidly?

Q. werg2H 2O= 4e+ 02+ 4H. The equivalent weight of oxygen is1) 322) 163) 84) 4

Q. When $O_2$ is adsorbed on a metallic surface, electron transfer occurs from the metal to $O_2$. The TRUE statement(s) regarding this adsorption is(are)

1. $O_2$ is physisorbed
2. Heat is released
3. Occupancy of ${\pi }_{2p}$ of $O_2$ is increased
4. Bond length of $O_2$ is increased
   

Q. 50 ml of H2 gas difusses through a samll hole vessel in 20 min . time taken by 40 ml of a diffusion under similar condition

Q. Helium collected over Water measures 350 ml at 20 degree centigrade. If atmospheric pressure is 752. 5 mm of Hg and vapour pressure of water at 20 degree centigrade be 17.5 mm Hg, what is the percentage of water vapour in moist helium gas?

Q. When dioxygen is adsorbed on a metallic surface, the electron transfer occurs from the metal to the molecule. The true statements regarding this adsorption are:

1. $O_2$ is physisorbed
2. Heat is released
3. Occupancy of ${\pi }_{2px}^{\ast }$ $O_2$ is increased
4. Bond length of $O_2$ is increased

Q. HAEMOGLOBIN CONTAIN 0.334% OF IRON BY WEIGHT . THE MOLECULAR WEIGHT OF HAEMOGLOBIN IS APPROXIMATELY 67200 . THE NUMBER OF IRON ATOMS PRESENT IN ONE MOLECULES