BITSAT2009Chemistryp Block Elements (Group 15, 16, 17 & 18)Actual
Which of the following is used in the preparation of chlorine?
Options
- AOnly MnO ₂
- BOnly KMnO ₄
- CBoth MnO ₂ and KMnO 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