(a) The diagram below shows the frasch process used for extraction of sulphur
Use it to answer the question that follows
(i) Identify X
(ii) Why is it necessary to use superheated water in this process (iii) State two physical properties of sulphur that makes it possible for it to be extracted by this method (b) The diagram below shows part of the process in the manufacture of sulphuric (VI) acid. Study it and answer the questions that follow
(I) Write an equation for the formation of sulphur (IV) oxide from sulphur
(II) What is the role of concentrated sulphur (VI) acid in chamber A? (III) Name two catalysts that can be used in the catalytic chamber B. (IV) State two roles of the heat exchanger (c) Explain one way in which sulphur (IV) oxide is a pollutant (d).what observation will be made when a few drops of concentrated sulphuric (VI) acid are added to crystals of sugar? Explain your answer
ANSWERS
​(a)(i)Hot compressed air
(ii)To melt the sulphur and maintain it in molten state (iii)low melting point of sulphur - insolubility of sulphur in water - less dense than water (b)(i)S + O2 → SO2 (ii)To dry the SO2 and air (iii)Vanadium (v) oxide and platinum or titanium (iv)it provides the reactants (SO2 and O2) with enough energy to react - it removes heat from the product hence preventing decomposition or conserves heat, or recycles heat or reduces cost of production. (c)- contributes to acid rain which corrodes buildings OR - causes aquatic solutions to be acidic hence affecting aquatic life etc. - poisonous/toxic (d)Turns black conc H2SO4 removes hydrogen and oxygen from the sugar molecule leaving only carbon which is black . Dehydration of sugar forms carbon which is black. ​Related Chemistry Questions and Answers on Sulphur and It's Compound Form 3 Level
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