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Effect of Change of Temperature on State Change of Matter

Which of the ...

Question

Which of the following condition of temperature and pressure are preffered most for liquifying a Hypothetical gas 'X' ?

T =

120^{o}

C , P = 1 atm

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T =

130^{o}

C , P = 0.50 atm

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T =

110^{o}

C , P = 1 atm

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T =

100^{o}

C , P = 2 atm

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Solution

The correct option is D T = $100^{o}$ C , P = 2 atm
On increasing the temperature of gases, the kinetic energy of the particles increases. Due to the increase in kinetic energy, the particles move in random directions. Therefore it becomes difficult to compress the gas if the temperature is high.
On increasing the pressure of gases, the particles come close to each other hence intermolecular force of attraction between them increases. Therefore it becomes easy to compress the gas if the pressure is high.
Therefore, the correct answer is T = $100^{o}$ C , P = 2 atm

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