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Which of the following is used to prepar...

Which of the following is used to prepare `Cl_(2)` gas at room temperature from concentrated HCl ?

A

`MnO_(2)`

B

`H_(2)S`

C

`KMnO_(4)`

D

`Cr_(2)O_(3)`

Text Solution

Verified by Experts

The correct Answer is:
C
`KMnO_(4)` oxidises halogen acids to halogen. `2KMnO_(4)+16HCI rarr2KCl+2MnCl_(2)+8H_(2)O+5Cl_(2)`
`therefore" "KMnO_(4)` is used to prepare `Cl_(2)` from concentrated HCl.
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Knowledge Check

  • Which of the following is used to prepare CI_(2) gas at room temperature from concentrated HCI?

    A
    `MnO_(2)`
    B
    `H_(2)S`
    C
    `KMnO_(4)`
    D
    `Cr_(2)O_(3)`

  • Which of the following reaction produce Cl_(2) gas?

    A
    `NaCl+H_(2)SO_(4)to`
    B
    `KClO_(3)overset("Heat")to`
    C
    `HCl+O_(3)to`
    D
    `KCl+AgNO_(3)to`

  • Which pair gives Cl_(2) at room temperature

    A
    `HCl_("Conc." )+KMnO_(4)`
    B
    `NaCl+H_(2)SO_(4"conc.")`
    C
    `NaCl+MnO_(2)`
    D
    `NaCl+HNO_(3conc.)`

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