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Question
At absolute zero, gases lose their characteristic properties. Which of the following sequence of explanation is correct for justifying the above fact?
(a) The value of zero for volume coordinate shows that gases occupy no volume
(b) Volume occupied by a gas decreases with a decrease in temperature
(c) At −273.15o C (absolute zero), the plot of V vs t0 C intersects the temperature axis
(d) A gas occupying zero volume means that the matter does not exist in the gaseous state
At absolute zero, gases lose their characteristic properties. Which of the following sequence of explanation is correct for justifying the above fact?
(a) The value of zero for volume coordinate shows that gases occupy no volume
(b) Volume occupied by a gas decreases with a decrease in temperature
(c) At −273.15o C (absolute zero), the plot of V vs t0 C intersects the temperature axis
(d) A gas occupying zero volume means that the matter does not exist in the gaseous state
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Solution
The correct option is C b c a d
For most gases there is a linear relationship between temperature and pressure (see gas laws ), i.e., gases contract indefinitely as the temperature is decreased. Theoretically, at absolute zero the volume of an ideal gas would be zero and all molecular motion would cease. In actuality, all gases condense to solids or liquids well above this point. Although absolute zero cannot be reached.
For most gases there is a linear relationship between temperature and pressure (see gas laws ), i.e., gases contract indefinitely as the temperature is decreased. Theoretically, at absolute zero the volume of an ideal gas would be zero and all molecular motion would cease. In actuality, all gases condense to solids or liquids well above this point. Although absolute zero cannot be reached.
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