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Electrochemistry Test - 23
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Electrochemistry Test - 23
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  • Question 1/10
    4 / -1
    The standard reduction potentials of Zn2+|Zn, Cu2+|Cu and Ag+|Ag are respectively - 0.76, 0.34 and 0.8 V. The following cells were constructed .
    I. Zn|Zn2+||Cu2+|Cu
    II. Zn|Zn2+||Ag+|Ag
    III. Cu|Cu2+||Ag+|Ag
    what is the correct order of Eocell of these cell ?
  • Question 2/10
    4 / -1
    The rusting of iron takes place as follows
    2H+ + 2e- + 1/2 O2 → H2O (l); Eo = +1.23 V
    Fe2+ + 2e- → Fe(s); Eo = - 0.44 V
    Calculate ∆Go for the net process.
    Solutions

  • Question 3/10
    4 / -1
    The standard reduction potential of the reaction ,
    H2 O = e- → 1/2 H2 + OH at 298 K is
  • Question 4/10
    4 / -1
    The oxidation potential values of A , B ,C and D are -0.03, + 0.108 V, - 0.07 V and + 0.1 V respectively. The non-spontaneous cell reaction takes place between
  • Question 5/10
    4 / -1
    The hydrogen electrode is dipped in a solution of pH 3 at 25°C. The potential would be (the value of 2.303 RT / F is 0.059 V)
  • Question 6/10
    4 / -1
    The standard electrode potential is measured by
  • Question 7/10
    4 / -1
    Which of the following expression is correct?
    Solutions

  • Question 8/10
    4 / -1
    The standard reduction potential of Zn and Ag in water at 298 K are, Zn2+ + 2e- ⇌ Zn; Eo = -0.76 V and Ag+ + e- ⇌ Ag; Eo = +0.80 V. Which of the following reactions take place?
  • Question 9/10
    4 / -1
    A standard hydrogen electrode has zero electrode potential because
  • Question 10/10
    4 / -1
    During charging of lead storage battery, the reaction occurring at the anode is
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