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Which of the following pair will give ch...

Which of the following pair will give chlorine gas most quickly, upon reaction ?

A

HCl and `KMnO_4`

B

NaCl and `H_3 PO_4`

C

NaCl and `MnO_2`

D

`CaCl_2 and Br_2`

Text Solution

Verified by Experts

The correct Answer is:
A
`2KMnO_4 + 6HCl to 2KCl + 2MnCl_2 + 3H_2 O + 5O`
`[2HCl + O to H_2 O + Cl_2] xx 5`
`2KMnO_4 + 16HCl to 8H_2 O + 2KCl + MnCl_2 + 5Cl_2`
`Cl_2` cannot be obtained from any pair of compounds.
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