Question

a gas jar containing air is placed upside down on a gas Jar of bromine vapour we will see that the red-brown papers of bromine from the lower gas jar spread of into air in the upper gas jar why show bromine vapour is heavier than ever even then it goes up against gravity and mixes with air

Answer 1

A gas jar containing air is placed upside down on a gas jar containing bromine vapours . It is observed after sometime , the gas jar containing air also becomes completely reddish brown.

Reason:

1. We observe that, after some time, the red brown vapours of bromine  spread out into the upper gas jar containing air.

In this way the upper gas jar which contains air in it also turns red-brown.

2. This mixing is due to Diffusion of Bromine vapour into air.. Air from upper jar also diffuses into lower jar though we cannot see it.

So, Diffusion is the process in which mixing of substances with another substance takes place  due to motion of particles. 

Answer 2

Answer:

Answer in this picture

Explanation:

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