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(A): A blue colour is obtained when a co...

(A): A blue colour is obtained when a copper wire is immersed in `AgNO_3` solution
(R) : Silver reduces `Cu^(2+)` to copper

A

Both (A) and (R) are true and (R) is the correct explanation of (A)

B

Both (A) and (R) are true and (R) is not the correct explanation of (A)

C

(A) is true but (R) is false

D

(A) is false but (R) is true

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-ELECTROCHEMISTRY -LEVEL-I ( EXERCISE-I)
  1. The S.R.Ps of Cu^(2+) // Cu , Hg^(2+)//Hg and Zn^(2+)//Zn are respecti...

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  2. The E(M^(3+)|M^(2+))^(0) values for Cr, Mn, Fe and Co are -0.41, +1.57...

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  3. (A): A blue colour is obtained when a copper wire is immersed in AgNO3...

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  4. The half cell reaction, with its standard reduction potentials are ...

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  5. A student made the following observations in the laboratory, A) Cl...

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  6. Four colourless salt solutions are placed in separate test tubes and a...

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  7. (A): In the construction of Galvanic cell, lithium electrode can not b...

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  8. The potential of single electrode depends upon

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  9. The Nernst equation giving dependence of electrode potential on concen...

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  10. Consider the following four electrode : A = Cu^(2+) (0.0001 M)// Cu(...

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  11. The Nernst equation for the reduction potential of a non metal A when ...

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  12. Which of the following is not correct ?

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  13. The e.m.f of the following Deniell at 298 K is E1 , Zn//ZnSO4 (0.01 M...

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  14. Zn(s) + Cl2 (1 atm ) to Zn^(2+) + 2Cl^(-) , the E^(0) of the cell is ...

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  15. For the cell Zn// Zn^(2+) // // Cu^(2+) // Cu , if the concentration o...

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  16. In a cell that utilises the reaction Zn((s)) + 2H((aq))^(+) to Zn((aq)...

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  17. For a cell reaction , Cu^(2+) (C1 , aq) + Zn(s) to Zn^(2+) (C2 , aq) +...

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  18. The relationship between standard reduction potential of a cell and eq...

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  19. For a spontaneous reaction the DeltaG , equilibrium constant (K) and E...

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  20. For the reaction Pt// H2 (1 atm) // H^(+) (aq) // // Cl^(-) (aq) // Ag...

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