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12th Standard English Medium Chemistry Subject Electro Chemistry Book Back 3 Mark Questions with Solution Part - I

12th Standard

    Reg.No. :
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Chemistry

Time : 00:30:00 Hrs
Total Marks : 15

    Part I

    5 x 3 = 15
  1. Arrange the following solutions in the decreasing order of specific conductance.
    i) 0.01M KCl
    ii) 0.005M KCl
    iii) 0.1M KCl
    iv) 0.25M KCl
    v) 0.5M KCl

  2. 0.1M NaCl solution is placed in two different cells having cell constant 0.5 and 0.25 cm-1 respectively. Which of the two will have greater value of specific conductance.

  3. Can Fe3+ oxidises Bromide to bromine under standard conditions?
    Given: \({ E }_{ { Fe }^{ 3+ }|{ Fe }^{ 2+ } }^{ 0 }=0.771V\)\(\\ { E }^{0}_{ { Br }_{ 2 }|{ Br }^{ - } }=1.09V\).

  4. Two metals M1 and M2 have reduction potential values of -xV and +yV respectively. Which will liberate H2 and H2SO4.

  5. A solution of silver nitrate is electrolysed for 20 minutes with a current of 2 amperes. Calculate the mass of silver deposited at the cathode.

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