(i) B- Copper electrode
(ii) Y – oxygen
(iii) Less energy is required to oxidize Cu metal than oxidize H+ ions.
sharon kalunda answered the question on May 20, 2019 at 12:06
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The solubility of salt x at various temperature is as shown in the data given below.
Using a suitable scale draw a solubility curve of salt x on the grid provided below
Date posted: May 20, 2019. Answers (1)
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Date posted: May 20, 2019. Answers (1)
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Date posted: May 20, 2019. Answers (1)
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(ii) Name process I and II
(iii) Identify the products A...(Solved)
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(ii) Name process I and II
(iii) Identify the products A and B
(iv) Name catalyst used in product II
(v) Draw the structural formula of the repeating unit to the polymer C
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(i) What name is given to the process?
(ii Why is the process necessary.
Date posted: May 20, 2019. Answers (1)
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Date posted: May 20, 2019. Answers (1)
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(i) Give equation for the reaction occurring at the two electrode.
Anode
Cathode...(Solved)
The diagram below shows method used to extract aluminium by the electrolysis of molten
bauxite.
(i) Give equation for the reaction occurring at the two electrode.
Anode
Cathode
(ii) In this process the anode rod have to be replaced from time to time. Explain.
(iii) The working temperature in this cell is below the normal melting point of the
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Date posted: May 20, 2019. Answers (1)
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answer the questions that follow.(Solved)
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answer the questions that follow.
Assuming that steel and stainless steel have similar properties to iron.
(a) Why do some stainless steel sauce pans have a copper base?
(b) Aluminum with a steel core is used for overhead power cables in preference to
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( c) Apart from over head power cables copper is chosen for almost all other electrical uses. Suggest two reasons fort he choice of copper.
Date posted: May 20, 2019. Answers (1)
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Give a reason for your choice.(Solved)
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Date posted: May 20, 2019. Answers (1)
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Hydrogen peroxide decomposes according to the equation shown below.
8.5g of hydrogen peroxide contained in 100cm3 of solution with water were completely
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as shown in the equation.(Solved)
In a closed system an equilibrium exists between nitrogen(IV) oxide and dinitrogen tetraoxide
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State and explain the observation made when a glass syringe containing the equilibrium mixture is immersed in ice-cold water.
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Date posted: May 20, 2019. Answers (1)
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(a) What condition is necessary for this reaction to take place?
(b) Identify the bonds which are broken and those...(Solved)
Chlorine reacts with methane as shown below.
(a) What condition is necessary for this reaction to take place?
(b) Identify the bonds which are broken and those that are formed.
(i) Bonds broken.
(ii) Bonds formed.
Date posted: May 20, 2019. Answers (1)
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Hydrogen and Flourine react according to the equation.
On the grid provided below, sketch the energy level diagram for the reverse reaction.
(b) Calculate the molar enthalpy of formation of HF.
Date posted: May 20, 2019. Answers (1)
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The table below shows tests carried out in a separate sample of water drawn from a well and
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Identify the cation and anion present in the water
Cation
Anion
Date posted: May 20, 2019. Answers (1)
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Date posted: May 20, 2019. Answers (1)