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(a) A – Sodium ethanoate
B – Acidified KMnO4 or K2Cr2O7
(b) Oxidation
maurice.mutuku answered the question on November 6, 2019 at 08:23
- The structure below represents a cleansing agent.(Solved)
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)
- Give the IUPAC name for each of the following organic compounds;(Solved)
Give the IUPAC name for each of the following organic compounds;
Date posted: November 6, 2019. Answers (1)
- Study the scheme given below and answer the questions that follow;(Solved)
Study the scheme given below and answer the questions that follow;
i) Name the reagents used in:
Step I:
Step II
Step III
ii) Write an equation to show products formed for the complete combustion of CH = CH
iii) Explain one disadvantage of continued use of items made form the compound formed in step III
Date posted: November 6, 2019. Answers (1)
- a) Give the names of the following compounds:
i) CH3CH2CH2CH2OH
ii) CH3CH2COOH
iii) CH3C – O- CH2CH3(Solved)
a) Give the names of the following compounds:
i) CH3CH2CH2CH2OH
ii) CH3CH2COOH
iii) CH3C – O- CH2CH3
Date posted: November 6, 2019. Answers (1)
- Study the schematic diagram below and answer the questions that follow:-(Solved)
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)
- Study the scheme below and use it to answer the questions that follow:-(Solved)
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)
- Name the compound with the formula below :
CH3CH2CH2ONa(Solved)
Name the compound with the formula below :
CH3CH2CH2ONa
Date posted: November 6, 2019. Answers (1)
- State two factors that affect the properties of a polymer(Solved)
State two factors that affect the properties of a polymer
Date posted: November 6, 2019. Answers (1)
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State why C2H4 burns with a more smoky flame than C2H6
Date posted: November 6, 2019. Answers (1)
- The structure below shows some reactions starting with ethanol. Study it and answer the questions that follow:(Solved)
The structure below shows some reactions starting with ethanol. Study it and answer the questions that follow:
(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………………………………………………………..
(II) If the relative molecular mass of U is 42000, determine the value of n (C=12, H=1)
Date posted: November 6, 2019. Answers (1)
- Give the IUPAC names of the following compounds:(Solved)
Give the IUPAC names of the following compounds:
Date posted: November 6, 2019. Answers (1)
- What is absolute ethanol?(Solved)
(a) What is absolute ethanol?
(b) State two conditions required for process G to take place efficiently
Date posted: November 6, 2019. Answers (1)
- Study the polymer below and use it to answer the questions that follow:(Solved)
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)
- The formula below represents active ingredients of two cleansing agents A and B(Solved)
The formula below represents active ingredients of two cleansing agents A and B
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)
- A natural polymer is made up of the monomer:(Solved)
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)
- 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(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)
- Write chemical equation to represent the effect of heat on ammonium carbonate(Solved)
Write chemical equation to represent the effect of heat on ammonium carbonate
Date posted: November 1, 2019. Answers (1)
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Explain the environmental effects of burning plastics in air as a disposal method
Date posted: November 1, 2019. Answers (1)
- The structure of the monomer phenyl ethene is given below:-(Solved)
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)