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BITSAT2009Chemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Which of the following is used in the preparation of chlorine?

Options

  1. AOnly MnO ₂
  2. BOnly KMnO ₄
  3. CBoth MnO ₂ and KMnO ₄
  4. DEither MnO ₂ , or KMnO ₄

Correct answer

C. Both MnO ₂ and KMnO ₄

Step-by-step solution

Both MnO ₂ and KMnO ₄ used for the preparation of chlorine by the action of conc. HCl array l MnO ₂+4 HCl MnCl ₂+2 H ₂ O + Cl ₂ 2 KMnO ₄+16 HCl 2 KCl +2 MnCl ₂ +8 H ₂ O +5 Cl ₂ array Chlorine is not obtained by dil. HCl Ag ₂ ~S ₂ O ₃+ H ₂ O Ag ₂ ~S + H ₂ SO ₄

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