(a) (i) B (ii) A
(b) Sodium hydroxide and hydrochloric acid are fully ionized hence more free ions to react
while ammonia solution and ethanoic acid are partially ionized hence less ions to react.
sharon kalunda answered the question on May 21, 2019 at 10:21
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(i) Explain why D and E would not be expected to...(Solved)
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(ii) Draw the structures of the two monomers forming the polymer.(Solved)
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(ii) Draw the structures of the two monomers forming the polymer.
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(i) Explain how process T is carried out.
(ii)...(Solved)
The flow chart below shows industrial extraction Aluminium metal. Study it and answer the questions that follow.
(i) Explain how process T is carried out.
(ii) Name residue P, give a reason.
(iii) Explain why it is necessary to heat Aluminium oxide in presence of cryolite before
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Date posted: May 21, 2019. Answers (1)
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(ii) Name the yellow solid.(Solved)
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a)(i) Identify the reagents M and R
(ii) Name the yellow solid.
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(ii) Increasing the temperature .
Date posted: May 21, 2019. Answers (1)
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a) Name solid A.
b) Under what conditions does sulphuric acid react with solid A.
c) What is the...(Solved)
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a) Name solid A.
b) Under what conditions does sulphuric acid react with solid A.
c) What is the colour of liquid B
d) What is the purpose of cold water
e) 1 cm3 of liquid B was diluted with distilled water and a few drops of copper turnings dropped into it A colourless gas and later brown gas were produced.
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(ii) Name the brown gas formed?
(iii) Give an equation for the formation of the brown gas
Date posted: May 21, 2019. Answers (1)
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(a) What is the valencies of V and W respectively.
(b) To which groups of the...(Solved)
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(a) What is the valencies of V and W respectively.
(b) To which groups of the periodic table do V, and X belong.
(c) In which periods do elements V and W lie.?
(d) Which of the three elements is a non-metal?
(e) Write down the formula of the compounds formed when:
(i) V reacts with W
(ii) X reacts with Oxygen
f) How many
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(ii) Protons does W have ?
Date posted: May 21, 2019. Answers (1)
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a) Give the chemical name of the product formed when magnesium burns in air
b) Write a chemical equation for the formation of product.
c) (i) Name filtrate collected after sodium carbonate was added
(ii) Name the white powder.
d) Write chemical equation for the reaction between product in (a) and acid.
e) Name the ions present in the filtrate after addition of sodium carbonate.
f) Write an ionic equation to show the formation of the white powder
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Date posted: May 21, 2019. Answers (1)
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(i) Name the compounds
(ii) Name the process
(iii) State one condition necessary...(Solved)
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(i) Name the compounds M,N,T,X,Y and Z
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Date posted: May 21, 2019. Answers (1)
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Date posted: May 21, 2019. Answers (1)
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(ii) Write an equation for the reaction at the anode.
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(ii) Find the number of moles of electrons passed.
(iii) Determine the value of n in the metallic ion Rn+.
Date posted: May 21, 2019. Answers (1)
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follow:
a) (i) Identify the strongest reducing agent and the strongest oxidizing agent. Give reasons.
(ii) Calculate the e.m.f of the cell formed by connecting half cells C and D.
b) Draw and label a diagram of a cell formed by –connecting half cells of E and D. On the
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Date posted: May 21, 2019. Answers (1)
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Date posted: May 21, 2019. Answers (1)