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