Why heating of catalyst is discontinued the moment the oxidation of sulphur dioxide takes place ?

Why is the heating of catalyst discontinued as soon as the nitrogen and hydrogen start reacting during Haber's process?

The process of oxidative phosphorylation takes place in

beta -oxidation takes place in

Electrode where oxidation takes place

State the conditions required for the following reaction to take place : Any two conditions for the conversion of sulphur dioxide to sulphur trioxide.

In the Contact process State the conditions i.e catalyst promoter , temperature and pressure in the catalytic oxidation of sulphur dioxide to sulphur trioxide in the Contact tower . Give a balanced equation for the same .

Some bacteria obtain their energy by oxidising sulphur, producing sulphuric acid as a by-product. In the laboratory, or in industry, the first step in the conversion of sulphur to sulphuric acid is to produce sulphur dioxide. The sulphur dioxide is converted to sulphur trioxide, which reacts with water to give sulphuric acid. Name one catalyst used industrially which speeds up the conversion of sulphur dioxide to sulphur trioxide.

Name the catalyst which helps in the conversion of sulphur dioxide to sulphur trioxide in step C.

(i) The flow chart below shows steps in the Contact process or the manufacture of sulphuric acid : (ii) Write equations for : (1) The roasting of iron pyrites. (2) Formation of sulphur trioxide from sulphur dioxide.(III) (3) Platinum was the catalyst used in the conversion of sulphur dioxide to sulphur trioxide. What is the common name of the catalyst used nowadays ? (4) Give the formula of oleum. (5) Name the substance which is added to change oleum into sulphuric acid.

The bleaching action of chlorine is permanent, whereas the bleaching action and sulphur dioxide is temporary. In this context : (i) Give a reason, why chlorine is not used to bleach silk. (ii) State similarity in the use of sulphur dioxide and chlorine as bleaching agents. (iii) Explain the bleaching action of sulphur dioxide with the help of chemical equations. (iv) Why is bleaching by sulphur dioxide only temporary?