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NEET 2019
Exam
NEET
Year
2019
Subject
Chemistry
Chapter
States of Matter

NEET 2019 · Chemistry · States of Matter

A gas at 350K and 15 bar has a molar volume 20 per cent smaller...

A gas at 350Kand15350K and 15 bar has a molar volume 2020 per cent smaller than that for an ideal gas under the same conditions. The correct option about the gas, and its compressibility factor (Z)\left(Z\right) is

Options

  1. AZ>1Z > 1 and repulsive forces are dominant.
  2. BZ>1Z > 1 and attractive forces are dominant.
  3. CZ<1Z < 1 and attractive forces are dominant.
  4. DZ<1Z < 1 and repulsive forces are dominant.

Correct answer

C. Z<1Z < 1 and attractive forces are dominant.

Step-by-step solution

Z=PVnRTZ = \dfrac{PV}{nRT} as VV is 2020 % lesser than it would have been for an ideal gas.

∴PV∴ PV will be lesser than expected.

∴Z<1∴ Z < 1

Since the volume is lesser, the attractive forces are dominant.

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