A glass tube was filled with water then inverted into a beaker of water.Propane gas was added to the inverted tube until half the water has been displaced. The immersed tube was covered completely to exclude all light. Chlorine gas was added to displace all the remaining water. The immersed tube was exposed to direct sunlight.
1. What are the observations? 2. Account for the behaviour of the water meniscus, when the gas mixture was exposed to the light. 3. Describe the role of light in this reaction. 4. Draw the structures of one of the likely products of this reaction.

Question

A glass tube was filled with water then inverted into a beaker of water.Propane gas was added to the inverted tube until half the water has been displaced. The immersed tube was covered completely to exclude all light. Chlorine gas was added to displace all the remaining water. The immersed tube was exposed to direct sunlight.
1. What are the observations? 2. Account for the behaviour of the water meniscus, when the gas mixture was exposed to the light. 3. Describe the role of light in this reaction. 4. Draw the structures of one of the likely products of this reaction.

anonymous · Answer

5.Given that D(Cl-Cl) = 242.6 kJ/mol, what wavelenght of light is required to bring about this reaction?
6. Could light from a deuterium lamp ( λ = 250nm) initiate this reaction? Why?

anonymous · Answer

have you read about reactions involving radicals created when light excites a diatomic molecule like Cl2 and causes the thing to break into two chlorine atoms?

anonymous · Answer

yeahh i have

anonymous · Answer

okay...share with us what you are thinking. what do you think happens when the light hits the cl2 gas if the photon energy is large enough?