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 the 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 a reason for your answer.
No, the conclusion made by the student is wrong because the air from the upper gas jar also diffuses down into the lower gas jar containing bromine vapour. Since, the air is colourless it cannot be noticed by the student.
Related Articles
- When a gas jar containing air is inverted over a gas jar containing bromine vapour, the red-brown bromine vapour diffuses into air. Explain how bromine vapour diffuse into air.
- When a gas jar full of air is placed upside down on a gas jar full of bromine vapours, the red-brown vapours of bromine from the lower jar go upward into the jar containing air. In this experiment :(a) air is heavier than bromine(b) both air and bromine have the same density(c) bromine is heavier than air(d) bromine cannot be heavier than air because it is going upwards against gravity
- When a gas jar containing colourless air is kept upside down over a gas jar full of brown-coloured bromine vapour, then after some time, the brown colour of bromine vapour spreads into the upper gas jar making both the gas jars appear brown in colour. Which of the following conclusion obtained from these observations is incorrect?(a) bromine vapour is made of tiny particles which are moving(b) air is made up of tiny particles which are moving(c) the particles of bromine are moving but those of air are not moving(d) even though bromine vapour is heavier that air, it can move up against gravity
- 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.
- Which of the two diffuses slower: bromine vapour into air or copper sulphate into water?
- 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(a) What will happen when the glass plate between the two jars is pulled away?(b) What name is given to the phenomenon which takes place?(c) Name the brown gas which could be in jar A.(d) Which is the colourless gas most likely to be present in jar B?(e) Name one coloured solid and one colourless liquid which can show the same phenomenon."
- The probability of selecting a green marble at random from a jar that contains only green, white and yellow marbles is $\frac{1}{4}$. The probability of selecting a white marble at random from the same jar is $\frac{1}{3}$. If this jar contains 10 yellow marbles. What is the total number of marbles in the jar?
- The probability of selecting a red ball at random from a jar that contains only red, blue and orange balls is $\frac{1}{4}$.The probability of selecting a blue ball at random from the same jar $\frac{1}{3}$.If the jar contains 10 orange balls, find the total number of ball
- A jar contains 24 marbles, some are green and others are blue. If a marble is drawn at random from the jar, the probability that it is green is $\frac{2}{3}$. Find the number of blue balls in the jar.
- Bromine and air take about 15 minutes to diffuse completely but bromine diffuses into a vacuum very rapidly. Why is this so?
- Four gas jars filled with sulphur dioxide gas were inverted into troughs of water by four students and the following observations and inference were reported:(a) Water did not enter the gas jar and sulphur dioxide is insoluble in water. (b) A small amount of water entered the gas jar slowly and sulphur dioxide is sparingly soluble in water.(c) Water rushed into the gas jar and sulphur dioxide is highly soluble in water.(d) Water did not enter the gas jar and sulphur dioxide is soluble in water. The correct set of observations and inference drawn is reported in :(1) (a)(2) (b)(3) (c)(4) (d)"
- What is a JAR file?
- How to Download the Latest TestNG Jar File?
- Jar files in Java
- How can we create a multi-release jar(mrjar) using jar tool in Java 9?
Kickstart Your Career
Get certified by completing the course
Get Started