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**PLEASE ANSWER ALL QUESTIONS AND EXPLAIN **

TUTORIAL 7. GROUP 16 ELEMENTS 1. What are the two commercial methods for the preparation of oxygen? 2. Give an example of an acidic oxide and a basic oxide. 3. Name the allotropes of oxygen and sulphur and discuss how they can he 4. Give uses of the following: SO2, Na2S20s and H2SO4. 5. Give equations for the steps in the contact process for the manufacture o 6. Write equations for the following: converted from one form to the other. sulphuric acid. 6.1 Oxidation of SO2 with Cr20,2 (aq) 6.2 Reaction of SO2 with H2S 6.3 Reaction of S with NazSOs(aq) 7. Suggest a reason/s why SFs is known but not OFe Give one method for the preparation of H202. Write balanced equations for the reaction of H202 with: 8.1 Acidified solution of KMno4 8.2 Aqueous HI 8. 9. Define an oxide, peroxide and superoxide. Write reaction examples of conc.H2SO4 as a: 10.1 Dehydrating agent 10.2 Oxidizing agent 10. 11. Name and discuss the process for mining sulphur.

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mmencsm Og İdahon occur Reduc occur Q2 ttkio bou < anode , uL.ah Ms.aan以okerik (mng) Mn0

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