1.

Balance the following equation by oxidation number method.K2​ Cr2​ O7​ +HCl→KCl+CrCl3​ +H2​ O+Cl2​ .

Answer»

`K_(2)Cr_(2)O_(7)+8HCL to2CrCl_(3)+2Cl_(2)+2KCl+4H_(2)O`
`2K_(2)Cr_(2)O_(7)+28HCl to4CrCl_(3)+4Cl_(2)+4KCl+14H_(2)O`
`K_(2)Cr_(2)O_(7)+10HCl to2CrCl_(3)+2Cl_(2)+2KCl+5H_(2)O+2(O)`
`K_(2)Cr_(2)O_(7)_14HCl to 2CrCl_(3)+3Cl_(2)+2KCl+7H_(2)O`

Answer :D


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