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  • In which of the following conditions the distance between the molecules of hydrogen gas would increase (i) Increasing pressure on hydrogen contained in a closed container (ii) Some hydrogen gas leaking out of the container

In which of the following conditions, the distance between the molecules of hydrogen gas would increase?

(i) Increasing pressure on hydrogen contained in a closed container
(ii) Some hydrogen gas leaking out of the container
(iii) Increasing the volume of the container of hydrogen gas
(iv) Adding more hydrogen gas to the container without increasing the volume of the container

(a) (i) and (iii)
(b) (i) and (iv)
(c) (ii) and (iii)
(d) (ii) and (iv)

Answers (1)

Ans. C

Sol.

Molecules of gas acquire the complete volume of container.

These molecules move randomly inside the container, therefore the average molecular separation can be calculated by assuming the given number of molecules in given volume.

It is easy to understand, that the average molecular separation will increase by either increasing the volume keeping number of molecules constant or by decreasing number of molecules keeping volume constant.

Increasing pressure will lead to increase in temperature of a gas in closed container. This will increase the kinetic energy of molecules. Therefore, it will not help in increasing distance between molecules.

Hence statement numbers (i) and (iii) are correct which will lead to correct answer as option C.

Posted by

Gurleen Kaur

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