(i) Temperature 5000c
(ii) When burnt in an atmosphere enriched with oxygen
(iii) Oxidation in the presence of platinum rhodium catalyst
maurice.mutuku answered the question on September 19, 2019 at 07:04
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Date posted: September 19, 2019. Answers (1)
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(b) State one use of the...(Solved)
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a) Name the missing condition in the above set up.
b) Explain why the combustion tube is clamped in a slanting position.
c) Before lighting the gas at the end of delivery tube, hydrogen must be let to pass through until all the air is driven out. Explain.
d) State three observations that occur in the combustion tube.
e) Why was hydrogen gas burnt at point Z.
f) Why should the supply of hydrogen gas be continued while the apparatus cool.
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Date posted: September 19, 2019. Answers (1)
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Date posted: September 19, 2019. Answers (1)
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Date posted: September 19, 2019. Answers (1)
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Date posted: September 19, 2019. Answers (1)
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i) Which electrode is the cathode ? Explain.
ii) State another suitable method for collecting gas X.
iii) Write ionic equations to show reactions that take place at the :
Anode
Cathode
iv) Explain how the identity of the product at the cathode of this electrolysis can be confirmed.
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Date posted: September 18, 2019. Answers (1)
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(a) (i) The same group
(ii) Period three
(iii) What is the family name given to the group to which elements identified in a(i) above belongs.
(b) How does the atomic radius of element B and A compare. Explain.
(c) State two industrial use of element B.
(d) With reason, compare the reactivity of C and D.
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a) State the observation made in the tube.
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State and explain the observation made on acidified potassium chromate VI solution.
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Coulombs)
Date posted: September 18, 2019. Answers (1)
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BiCI3(aq) + H20(l) BiOCl(s) + 2HCl(aq)
What would...(Solved)
When bismuth III Chloride is added to water, a reaction occurs and a white precipitate forms as shown below.
BiCI3(aq) + H20(l) BiOCl(s) + 2HCl(aq)
What would be the effect on the amount of the precipitate formed if sodium hydroxide solution is added to the equilibrium mixture ? Explain your answer.
Date posted: September 18, 2019. Answers (1)
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When 10g of a mixture of potassium chloride and anhydrous sodium sulphate is dissolved in water and excess barium chloride solution added. 6.9g of Barium sulphate is precipitated. Calculate the composition of the mixture. (K .= 39. Cl =35.5, Na=23, O =16, Ba=137)
Date posted: September 18, 2019. Answers (1)