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Electrochemical series is series of elem...

Electrochemical series is series of elements arranged in increasing order of their reduction potential. `E_(H^(+)|H_(2))=0`. The metals abvoe `H_(2)` have reductioni potential, they are more reactive than hydrogen whereas metals below hydrogen are less reactive than `H_(2)`. Reduction potentials of metal depends upon (i) sublimation energy (ii) ionization energy and hydration energy of ions.
Which of the following metal can be extracted by chemical reduction?

A

Al

B

Mg

C

Na

D

Fe

Text Solution

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The correct Answer is:
D
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Electrochemical series is series of elements arranged in increasing order of their reduction potential. E_(H^(+)|H_(2))=0 . The metals abvoe H_(2) have reductioni potential, they are more reactive than hydrogen whereas metals below hydrogen are less reactive than H_(2) . Reduction potentials of metal depends upon (i) sublimation energy (ii) ionization energy and hydration energy of ions. Which of the following is weakest reducing agent among alkali metals?

Knowledge Check

  • Electrochemical series is series of elements arranged in increasing order of their reduction potential. E_(H^(+)|H_(2))=0 . The metals abvoe H_(2) have reductioni potential, they are more reactive than hydrogen whereas metals below hydrogen are less reactive than H_(2) . Reduction potentials of metal depends upon (i) sublimation energy (ii) ionization energy and hydration energy of ions. Which of the following is best reducing agent?

    A
    Li
    B
    Na
    C
    K
    D
    Cs

  • Electrochemical series is series of elements arranged in increasing order of their reduction potential. E_(H^(+)|H_(2))=0 . The metals abvoe H_(2) have reductioni potential, they are more reactive than hydrogen whereas metals below hydrogen are less reactive than H_(2) . Reduction potentials of metal depends upon (i) sublimation energy (ii) ionization energy and hydration energy of ions. Which of the following is best oxidizing agent?

    A
    `Cu^(2+)`
    B
    `Na^(+)`
    C
    `Ag^(+)`
    D
    `Al^(3+)`

  • Electrochemical series is series of elements arranged in increasing order of their reduction potential. E_(H^(+)|H_(2))=0 . The metals abvoe H_(2) have reductioni potential, they are more reactive than hydrogen whereas metals below hydrogen are less reactive than H_(2) . Reduction potentials of metal depends upon (i) sublimation energy (ii) ionization energy and hydration energy of ions. Which of the following cannot displace H_(2) from dil acid?

    A
    Pt
    B
    Zn
    C
    Mg
    D
    Pb

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