Which of th efollowing reactions may be used for the laboratory prepartion of chlorine

Options

A. `NaCl+MnO_(2)+H_(2)SO_(4)(conc.)rarr`
B. `Ca(OCl)Cl+H_(2)Orarr`
C. `KMnO_(4)+HCl(Conc)rarr`
D. Both (1) and (2)

Answer

4

Explanation

Chlorine gas can be obtained in the laboratory by oxidizing concentrated hydrochloric with either managemenses (iv)Oxide (heat required) or potassium permanganate (no heat required):
`Mn^(4+)(O^(2-))_(2)(s)+4H^(+)Cl^(-)(aq.)rarr Mn^(2+)(Cl^(-))_(2)(aq.)+2H_(2)O(l)+Cl_(2)(g)`
`2K^(+)MnO_(4)^(-)(s)+16H^(+)CI^(-)(aq.)rarr2K^(+)CI^(-) (aq.)+2Mn^(2+)(Cl^(-))^(2)(aq.)+8H_(2)O(l)+5Cl_(2)(g)`
Bleaching power also evolve chlorine when treated with ditute acid or carbon dioxide
`Ca(OCl)_(2)+H_(2)SO_(4)rarrCaSO_(4)+H_(2)O+Cl^(2)`
`Ca(OCl)_(2)+2HCl rarr CaCl_(2)+H_(2)O+Cl_(2)`
`Ca(OCl)^(2)+CO_(2)rarrCaCO_(3)+Cl_(2)`