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Why does zinc react with dilute sulphuri...

Why does zinc react with dilute sulphuric acid to give hydrogen gas but copper does not?

Text Solution

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Zinc lies above hydrogen whereas copper lies below hydrogen in the electrochemical series. Hence, zinc is more reactive than `H^(+)` whereas copper is less reactive. Therefore, zinc reacts with dilute `H_(2)O` but copper cannot liberate `H_(2)` gas by reaction with dilute `H_(2)SO_(4)`.
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Zinc reacts with sulphuric acid.

Zinc reacts with dilute sulphuric acid to give zinc sulphate and hydrogen.

Knowledge Check

  • When zinc reacts with very dilute nitric acid it produces

    A
    `NO`
    B
    `NH_4.NO_3`
    C
    `NO_2`
    D
    `H_2`

  • Aluminium reacts with dilute sulphuric acid to give out gas X which produces a characteristic pop sound when it is burnt. Which of these is gas X?

    A
    Hydrogen
    B
    Carbon dioxide
    C
    Sulphur dioxide
    D
    Aluminium oxide

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