is the ans D?
12 Answers
					
			skygirl
					·2009-02-23 05:24:13
			
			
			well ... said dat coz .. at such a low temperature its only double bond dat can react... breaking a triplbe bond needs much more energy dats difficult to provide at that low temp.
so it reacts with bromine and becomes 4,5-dibromopentyne.
					
			vector
					·2009-02-23 05:26:47
			
			
			
			actually i was thinking as c≡c is more e rich so it must attack first tell me where i m wrong
					
			skygirl
					·2009-02-23 05:35:12
			
			
			
			
			
			
			
			
		hmm.. more e- rich ... okie...
but breaking a triple is not easy ... thats y even if it attacks its not succesful ... (it = bromine)
 single correct