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Use the standard electrode potentials for elements A, B, C, D and F given below to answer the questions that follow.
Chemf4et1p2q5aa

  1. Which element is likely to be hydrogen? Give a reason for your answer. 
  2. What is Eθ of the strongest reducing agent?
  3. Calculate the e.m.f of the cell that would be formed when half cells of B and D are combined.

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  1. Which element is likely to be hydrogen? Give a reason for your answer.
    • It has an Eθ of zero // Being used as the standard electrode.
  2. What is Eθ of the strongest reducing agent? 
    • -290V  Reject A or A2+
  3. Calculate the e.m.f of the cell that would be formed when half cells of B and D are combined. 
    • Ecell = Ered – Eox
      = +0.34 - -2.38
      = +2.72V
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C
A
-2.38
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A
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