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The correct order of reactivity of K,Mg,...

The correct order of reactivity of `K,Mg,Zn` and `Cu` with water according to the electrochemical series is

A

`KgtMggtZngtCu`

B

`MggtZngtCugtK`

C

`KgtZngtMggtCu`

D

`CugtZngtMggtK`

Text Solution

Verified by Experts

The correct Answer is:
a
Refer to electrochemical series.
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CENGAGE CHEMISTRY-ELECTROCHEMISTRY-Ex 3.1 (Objective)
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  2. The standard EMF of a galvanic cell involving cell reaction with n=2 i...

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  3. The correct order of reactivity of K,Mg,Zn and Cu with water according...

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  4. For Pt(H(2))|H(2)O , reduction potential at 298 K and 1 atm is :

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  5. Consider the cell : Pt|H(2)(p(1)atm)|H^(o+)(x(1)M) || H^(o+)(x(2)M)|...

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  6. If E^(c-).(Fe^(3+)|Fe) and E^(c-).(Fe^(2+)|Fe) are =-0.36 V and -0.439...

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  7. Pt(Cl(2))(p(1))|HCl(0.1M)|(Cl(2))(p(2)),Pt cell reaction will be ender...

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  8. Consider the following cell with hydrogen electrodes at difference pre...

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  9. Consider the following cell reaction Zn +2Ag^(o+)rarr Zn ^(2+)+2Ag....

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  10. The standard reduction potentials of three metals A,B, and C are +0.5 ...

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  11. Calculate the maximum work that can be obtained from the decimolar Dan...

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  12. Stronger the oxidizing agent, greater is the

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  13. Consider the cell Ag(s)|AgBr(s)Br^(c-)(aq)||AgCl(s),Cl^(c-)(aq)|Ag(s) ...

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  14. The pH of LHE in the following cell is : Pt, H(2)(1atm)|H^(o+)(x M)...

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  15. At what concentration of [overset(c-)(O)H] does the following half rea...

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  16. If hydrogen electrodes dipped in two solutions of pH=3 and pH=6 are co...

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  17. Consider the cell reaction : Mg(s)+Cu^(2+)(aq) rarr Cu(s) +Mg^(2+)(a...

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  18. E^(c-).(red) of different half cell are given as : E^(c-).(Cu^(2+)|C...

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  19. For the reaction : A+2B^(3+) rarr 2B^(2+)+A^(2+) E^(0) of the give...

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  20. Excess of solid AgCl is added to a 0.1 M solution of Br^(c-) ions. E^(...

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