(a) A – Sodium ethanoate
B – Acidified KMnO4 or K2Cr2O7
(b) Oxidation
maurice.mutuku answered the question on November 6, 2019 at 08:23
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The structure below represents a cleansing agent.
a) State the type of cleansing agent represented above
b) State one advantage and one disadvantage of using the above cleansing agent.
Date posted: November 6, 2019. Answers (1)
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Date posted: November 6, 2019. Answers (1)
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i) Name the reagents used in:
Step I:
Step II
Step III
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iii) Explain one disadvantage of continued use of items made form the compound formed in step III
Date posted: November 6, 2019. Answers (1)
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i) CH3CH2CH2CH2OH
ii) CH3CH2COOH
iii) CH3C – O- CH2CH3(Solved)
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i) CH3CH2CH2CH2OH
ii) CH3CH2COOH
iii) CH3C – O- CH2CH3
Date posted: November 6, 2019. Answers (1)
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Study the schematic diagram below and answer the questions that follow:-
(i) Identify the following:
Substance Q
Substance R
Gas P
(ii) Name:
Step 1
Step 4
(iii) Draw the structural formula of the major product of step 5
(iv) State the condition and reagent in step 3
Date posted: November 6, 2019. Answers (1)
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Study the scheme below and use it to answer the questions that follow:-
i) Name the following compounds:-
I. Product T ………………………… II. K ………
ii) State one common physical property of substance G
iii) State the type of reaction that occurred in step J
iv) Give one use of substance K
v) Write an equation for the combustion of compound P
vi) Explain how compounds CH3CH2COOH and CH3CH2CH2OH can be distinguished chemically
vii) If a polymer K has relative molecular mass of 12,600, calculate the value of n (H=1 C =12)
Date posted: November 6, 2019. Answers (1)
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CH3CH2CH2ONa(Solved)
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CH3CH2CH2ONa
Date posted: November 6, 2019. Answers (1)
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Date posted: November 6, 2019. Answers (1)
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Date posted: November 6, 2019. Answers (1)
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(i) Write the formula of the organic compounds P and S
(ii) Name the type of reaction, the reagent(s) and condition for the reactions in the following steps :-
(I) Step I
(II) Step II
(III) Step III
(iii) Name reagent R ……………………………………………………………
(iv) Draw the structural formula of T and give its name
(v) (I) Name compound U………………………………………………………..
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Date posted: November 6, 2019. Answers (1)
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Date posted: November 6, 2019. Answers (1)
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(b) State two conditions required for process G to take place efficiently
Date posted: November 6, 2019. Answers (1)
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Study the polymer below and use it to answer the questions that follow:
(a) Give the name of the monomer and draw its structures
(b) Identify the type of polymerization that takes place
(c) State one advantage of synthetic polymers
Date posted: November 6, 2019. Answers (1)
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Which one of the cleansing agents would be suitable to be used in water containing magnesium hydrogen carbonate? Explain
Date posted: November 6, 2019. Answers (1)
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A natural polymer is made up of the monomer:
(a) Write the structural formula of the repeat unit of the polymer
(b) When 5.0 x 10-5 moles of the polymer were hydrolysed, 0.515g of the monomer were obtained.
Determine the number of the monomer molecules in this polymer.
(C = 12; H = 1; N = 14; O =16)
Date posted: November 1, 2019. Answers (1)
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Explain why a lot of soap is needed when washing with hard water(Solved)
Sodium octadecanoate has a chemical formula CH3(CH2)6 COO-Na+, which is used as soap.
Explain why a lot of soap is needed when washing with hard water
Date posted: November 1, 2019. Answers (1)
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Date posted: November 1, 2019. Answers (1)
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Date posted: November 1, 2019. Answers (1)
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The structure of the monomer phenyl ethene is given below:-
a) Give the structure of the polymer formed when four of the monomers are added together
b) Give the name of the polymer formed in (a) above
Date posted: November 1, 2019. Answers (1)
- In the extraction of aluminium form its ore by the use of electrolysis, explain the following observations:-
(i) the graphite anode is replaced from time to...(Solved)
In the extraction of aluminium form its ore by the use of electrolysis, explain the following observations:-
(i) the graphite anode is replaced from time to time
(ii) the steel tank which can also serve as an electrode is also lined with graphite cathode
Date posted: November 1, 2019. Answers (1)