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Zn gives H2 gas with H2SO4 and HCl but n...

Zn gives `H_2` gas with `H_2SO_4` and HCl but not with `HNO_3` because

A

Zn acts as oxidizing agent when reacts with `HNO_3`

B

`HNO_3` is weaker acid than `H_2SO_4` and HCI

C

In electrochemical series Zn is above hydrogen

D

`NO_3^(-)` is reduced in preference to hydronium ion

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The correct Answer is:
D
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AAKASH SERIES-ELECTROCHEMISTRY -LEVEL-I ( EXERCISE-I)
  1. Standard reduction electrode potential of three metals A, B and C are ...

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  2. The difference of potential of two electrodes in a galvanic cell is kn...

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  3. Zn gives H2 gas with H2SO4 and HCl but not with HNO3 because

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  4. When Zn piece is kept in CuSO4 solution, copper gets precipitated beca...

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  5. For I2 + 2e to 2I^(-) , standard reduction potential = + 0.54 volt. Fo...

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  6. Beryllium is placed above magnesium in the Il group. When beryllium du...

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  7. E^(@) for Fe^(2+) + 2e to Fe is -0.44 V , E^(@) for Zn^(2+) + 2e to ...

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  8. Based on the data given below , the correct order of reducing power i...

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  9. For the cell prepared from electrod A , Cr2O7^(2-) |Cr^(3+) , E("red"...

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  10. The S.R.Ps of Cu^(2+) // Cu , Hg^(2+)//Hg and Zn^(2+)//Zn are respecti...

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

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

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

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

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

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

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  17. The potential of single electrode depends upon

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

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

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

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