a) A – Pale blue zone.
B – Green blue zone.
b) A reason; complete combustion takes place due to plenty of air.
maurice.mutuku answered the question on September 3, 2019 at 05:57
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(b) A part from the reagents used in (a) above, name two other sets of reagents that can be used to prepare chlorine gas.
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Date posted: August 19, 2019. Answers (1)
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(a) State how high temperatures in region B is maintained.
(b) Name the reducing agent in the process above.
(c) Identify;
(i) Y
(ii) Z
(d) Explain why it is desirable for compound Y to stay on top of Z.
(e) Write an equation for formation of Z.
Date posted: August 19, 2019. Answers (1)
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The melting and boiling points of alkanoic acids increases with increase in the number of carbon atoms in the molecules.
Date posted: August 19, 2019. Answers (1)
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i). What is the 
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ii). Which element is likely to be hydrogen? Give a reason for your answer.
Date posted: August 19, 2019. Answers (1)
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A volatile liquid N is a compound made of carbon, hydrogen and chlorine 0.40 moles of N contain 9.6g carbon, 1.6g hydrogen and 28.4g chlorine. Determine: (C=12, H=1,Cl=35.5)
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ii). The molecular formula of N
iii). The systematic name of N
Date posted: August 19, 2019. Answers (1)
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K
N
ii). Name the process in steps
2
4
iii). Identify the following reagents
P
Q
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Date posted: August 19, 2019. Answers (1)
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Date posted: August 19, 2019. Answers (1)
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a) Explain using 3 equations how Sulphur (IV) oxide is obtained in contact process.
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c) Name two impurities present in the gaseous mixture and suggest how they can be eliminated.
d) Identify the catalyst used in the catalytic converter and state two reasons why it is preferred.
e) Explain why Sulphur (VI) oxide is not absorbed directly into water.
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ii). Absorption tower.
iii). Diluter
Date posted: August 19, 2019. Answers (1)
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(b) Comment on the reactivity of the group in which element P belongs.
(c) Compare the melting points of elements R and Y.
(d) Compare the electricity conductivity of elements R and Y
(e) Explain the difference in melting points between the oxide of S and that of U
(f) Write an equation for the reaction between elements R and V.
(g) Which of the above elements would form;
(i) . A monovalent anion
(ii). A divalent cation
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Date posted: August 19, 2019. Answers (1)
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Date posted: August 19, 2019. Answers (1)
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Identify the following substances.
(a) (i) 
(ii) 
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Date posted: August 19, 2019. Answers (1)
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Date posted: August 19, 2019. Answers (1)
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Date posted: August 19, 2019. Answers (1)
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Date posted: August 16, 2019. Answers (1)
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State and explain what would be observed when dilute hydrochloric acid is added into the equilibrium mixture.
Date posted: August 16, 2019. Answers (1)
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Date posted: August 16, 2019. Answers (1)
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Date posted: August 16, 2019. Answers (1)
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Date posted: August 16, 2019. Answers (1)
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Date posted: August 16, 2019. Answers (1)