Discuss the toxic effect of `SO_2` and `SO_3`

Discuss the effect of pressure and temperature on the adsorption of gases on solids.

In the contact process for the manufacture of H_2SO_4 some amount of sulphuric acid is used as a starting material. Explain briefly, which is the catalyst used for the oxidation of SO_2 to SO_3 ?

Discuss the effect of temperature on reaction rate.

How is the presence of SO_2 detected?

Name the diseases which are caused by SO_2 and NO_2 gases.

Write one chemical test for SO_2 gas.

What are the harmful effects by SO_2 ?

Name the catalyst used for conversion of SO_2 to SO_3 in the contact process. How is oleum formed from SO_3 in this process?

For the conversion of 1 mole of SO_2(g) to SO_3(g) the heat of reaction at constant volume ( Delta U^@ ) at 298K is -97.027 KJ Calculate the enthalpy change ( Delta H^@ )