(a) Zinc blende
(b) 2$ZnO(s)\;+C(s)\;\rightarrow CO_2(g)\;+\;2Zn(s)$
(c) Manufacture of dry cells
- Galvanizing of iron sheets.
johnmulu answered the question on May 19, 2017 at 12:04
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(a) Name
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(ii) Process D1
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Date posted: May 16, 2017. Answers (1)
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Name
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(iii) One gas which is recycled.
Date posted: May 16, 2017. Answers (1)
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Date posted: May 16, 2017. Answers (1)
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Reagent Q
Solid R
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Date posted: May 16, 2017. Answers (1)
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Date posted: May 16, 2017. Answers (1)
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(i) Name the reagent and state the condition for the reaction in step I.
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Date posted: May 16, 2017. Answers (1)
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(ii) Why is the anode made of graphite and not steel?
(iii) State the properties of sodium metal that makes it possible for it to be collected as shown in the diagram.
iv) What is the function of the steel guaze cylinder?
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vi)Give reasons why large quantities of electricity is required for this process
Date posted: May 16, 2017. Answers (1)
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Date posted: May 15, 2017. Answers (1)
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i) Name gas K
ii) Write the formula of the cation present in slag M
iii) Identify gas P
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Date posted: May 15, 2017. Answers (1)
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Below is a simplified electrolytic cell used for purification of copper. Study it and answer the questions that follow.
i) Identify the cathode.
ii) Write the equation for the reaction at the anode.
iii) What name is given to L?
iv) State two uses of copper metal.
Date posted: May 15, 2017. Answers (1)
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i) Which of the letters represent:
I) Carbon electrode?
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Date posted: May 15, 2017. Answers (1)
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The set –up below can be used to produce sodium hydroxide by electrolyzing brine.
i) Identify gas Y.
ii) Describe how aqueous sodium hydroxide is formed in the above set-up
iii) One of the uses of sodium hydroxide is in the manufacturing of soaps. State one other use of sodium hydroxide
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i) During the electrolysis hydrogen gas was formed at electrode Y. Identify the anode. Give a reason for your answer.
ii) Why is the concentration of magnesium sulphate expected to increase during electrolysis?
iii) What will be observed if red and blue litmus papers were dipped into the solution after electrolysis?
Date posted: May 15, 2017. Answers (1)
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The apparatus shown in the diagram below were used to investigate the products formed when concentrated sodium chloride was electrolyzed using inert electrodes
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Date posted: May 15, 2017. Answers (1)