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i) Increased yield of NO/ Equilibrium shifts to the right // favours the
forward reaction// reduced pressure favours forward reaction// increased volume
number of molecules
ii) It will not affect the yield // remains the same
Catalyst do not affect position of Equilibrium
maurice.mutuku answered the question on October 31, 2019 at 06:34
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(i) State the chemical name of brine
(ii) Write the equations for the reactions at the electrodes
-Anode
-Cathode
(iii) Explain how sodium hydroxide is obtained from the product of this process
Date posted: October 31, 2019. Answers (1)
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(i)The identity of W
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Date posted: October 31, 2019. Answers (1)
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At the start of the experiment, the bulb did not light:-
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(b) Write the chemical equation for the reaction that took place at the cathode
Date posted: October 31, 2019. Answers (1)
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(iii) The electrolysis involved passing an electric current of 4A for one hour. Calculate the mass of
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Date posted: October 31, 2019. Answers (1)
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(b) Give a reason for the observations made in (a) above
(c) Calculate the e.m.f of the cell above
Date posted: October 31, 2019. Answers (1)
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(i) Identify the electrode which is ;
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(iii) Write a cell representative for the cell above
Date posted: October 31, 2019. Answers (1)
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(ii) What conclusion can be drawn from Step IV only? Explain
(iii) What observation would indicate the presence of a NO3- ion in step I?
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Date posted: October 29, 2019. Answers (1)
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(i) Substance B is formed from the solution of A on electrolysis
(ii) Substance B is formed from solution A when reacted with E
(c) Give one use of gas C
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Date posted: October 29, 2019. Answers (1)
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When nitrate solution of a certain metal X was electrolysed, 1.174g of metal X was deposited by a current of 4 amperes flowing for 16 minutes. Determine the formula of the metal nitrate. (1F= 96,500, R.A.M of X= 59)
Date posted: October 29, 2019. Answers (1)
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Date posted: October 29, 2019. Answers (1)
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Date posted: October 29, 2019. Answers (1)
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The table gives the standard redox potentials for a number of half reactions. Use it to answer the questions that follow:-
(i) Relative to which half-cell reaction are the above electrode potentials expressed?
(ii) Calculate the e.m.f of the cell made up by combining the 
electrode and 
electrode
(iii) Which of the substances listed in the above table is :-
I. The strongest oxidising agent
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Date posted: October 29, 2019. Answers (1)
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(i) Calculate the quantity of electricity...(Solved)
When a current of 6.42 A was passed through an electrolyte Y2+ ions for 10 minutes,2.74 of Y were deposited
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Date posted: October 29, 2019. Answers (1)
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Study the standard electrode potential for the half-cells given below and answer the questions that follow.(The letter do not represent the actual symbols of the elements)
i) Identify the strongest oxidizing agents. Give a reason for your answer
ii) Which two half-cells would produce the highest potential difference when combined?
iii) In the space below draw a complete electro-chemical cell of the two-half cells mentioned
in (ii) above
Date posted: October 29, 2019. Answers (1)
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Consider the cell diagram below:
i) Write the overall cell reaction for the above electrochemical cell
ii) Given that 
value for 
is -0.40V,calculate the value for 
Date posted: October 29, 2019. Answers (1)
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The reaction blow is a redox reaction
(a) Identify the species reduced. Explain
(b) Write the equation for the oxidation reaction
Date posted: October 29, 2019. Answers (1)
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Sodium metal reacts with oxygen according to the following equation:-
State one physical and one chemical difference between Na2O2 and Na2O
Physical difference......
Chemical difference......
Date posted: October 29, 2019. Answers (1)
- Study the electrode potentials in the table below and answer the question that follow:
(Letters are not the actual symbols of elements)(Solved)
Study the electrode potentials in the table below and answer the question that follow:
(Letters are not the actual symbols of elements)
(a) Which one is the strongest reducing agent?
(b) Write the ionic equation for the reaction that takes place when Z is dipped in a solution
of G+ ions
(c) Calculate the 
cell value of the reaction in (b) above
Date posted: October 29, 2019. Answers (1)
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Study the flow chart below and answer the questions that follow:
(a) Name gas Q
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Date posted: October 29, 2019. Answers (1)
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What mass of Zinc will be deposited from a solution of Zinc (II) Chloride when a current of 3A is passed through the Zinc (II) Chloride solution during electrolysis for 50 minutes?
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Date posted: October 29, 2019. Answers (1)