The following table shows the standard reduction potentials of some half cells. Study the table and refer to it to answer the questions that follow;

      

The following table shows the standard reduction potentials of some half cells. Study the table and refer to it to answer the questions that follow;

a) Identify the strongest oxidizing agent
b) Which substance would be used to oxidize R^- ion to the atom R
c) Study the cell represented below;

i) Identify the electrodes
ii) Write equations for the reaction taking place in each half- cell
iii) Determine the cell equation and the electromotive force (e.m.f) of the cell represented in
(c) above
iv) In which direction does the electrons flow in the external circuit of the cell whose e.m.f
is determined in (iii) above
d) A steady current of 2.5A was passed for 15 minutes through a cell containing divalent ions
M²⁺. During this process 0.74g of metal M was deposited (IF = 96500C)
i) Calculate the quantity of electricity passed in this cell
ii) Determine the relative atomic mass of M

  

Answers

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a) R

b) T

c) i) T_(g) and S_(g)

ii)

iii) T_(s)------->T2+ (aq) + 2e, E = +0.74V

iv) From T(s)/ T2+ half cell to S2+/ S(s) half cell through conducting wires

d) i) Q = It
= 2.5 x (15x60)
= 2250C

ii)

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maurice.mutuku answered the question on October 31, 2019 at 06:55

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