Question

what happens chlorine gas is passed through dry slaked lime what happened​

Answer 1

When chlorine is passed over slaked lime(Ca(OH)2) it is rapidly absorbed to form bleaching powder or else a chloride of lime.

Chemical reaction:

Ca(OH)2+Cl2----->CaOCl2+water

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Answer 2

When chlorine is passed over slaked lime, Ca(OH)2, it is rapidly absorbed, forming bleaching powder, or chloride of lime. The reaction is: Ca(OH)2+ Cl2= CaOCl2+ H2O.