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How will you test pure chloroform? |
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Answer» Solution :CHLOROFORM is oxidised by air in PRESENCE of light to form poisonous gas phosgene and HCl as shown in previous Q. When aq. `AgNO_(3)` solution is ADDED to the above solution, a white ppt. of AgCl is formed. `COCl_(2)+H_(2)Oto CO_(2)+2HCl` `HCl+AgNO_(3)to underset("White ppt.")(AgCl)+HNO_(3)` The formation of white ppt. confirms that chloroform is impure. if, however, no white ppt. is formed, it confirms that chloroform is pure. |
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