b)The following experiment was carried out to illustrate diffusion.
A few drops of concentrated nitric acid were added to pieces of copper at the bottom of a tall gas jar.A red-brown gas was formed and all the copper reacted in a very short time.The red-brown colour slowly moved up the gas jar initially the colour remained darkest at the bottom.After 30 minutes,the red-brown colour was uniform throughout the gas jar.

Question

b)The following experiment was carried out to illustrate diffusion.
A few drops of concentrated nitric acid were added to pieces of copper at the bottom of a tall gas jar.A red-brown gas was formed and all the copper reacted in a very short time.The red-brown colour slowly moved up the gas jar initially the colour remained darkest at the bottom.After 30 minutes,the red-brown colour was uniform throughout the gas jar.

anonymous · Answer

iv.Bromine vapour can be easily liquefied by cooling the vapour to 0 degree   celsius.Explain what happens to the bromine molecules as the vapour liquefies.

anonymous · Answer

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