Advertisements
Advertisements
Question
State whether the following statement is true or false :
Red-brown bromine vapour diffuse into air in a gas jar but the colourless air molecules do not diffuse into bromine vapour.
Advertisements
Solution
The statement given here is false. Air also diffuses into the bromine vapour but because air is colourless, we are not able to see its movement.
APPEARS IN
RELATED QUESTIONS
Give reasons:
A gas fills completely the vessel in which it is kept.
Give a reason for the following observation.
Naphthalene balls disappear with time without leaving any solid.
Which of the two diffuses faster : a liquid or a gas?
Explain how, the smell of food being cooked in the kitchen reaches us even from a considerable distance.
Why do gases diffuse very fast?
Look at the diagram on the right side. Jar A contains a red-brown gas whereas jar B contains a colourless gas. The two gas jars are separated by a galas plate placed between them
- What will happen when the glass plate between the two jars is pulled away?
- What name is given to the phenomenon which takes place?
- Name the brown gas which could be in jar A.
- Which is the colourless gas most likely to be present in jar B?
- Name one coloured solid and one colourless liquid which can show the same phenomenon.

A student placed a gas jar containing air in the upside down position over a gas jar full of red-brown bromine vapours. He observed that the red-brown colour spread upwards into the jar containing air. Based on this observation, the student concluded that it is only the bromine vapour which moves up and diffuses into air in the upper jar, the air from the upper jar does not move down by diffusion into the lower jar containing bromine vapours. Do you agree with this conclusion of the student? Give reason for your answer.
The space between ______ particles is the greatest one.
Comment upon the following:-
compressibility
Explain why?
- A gas fills a vessel completely?
- Camphor disappears without leaving any residue.
