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Asked Nov 23, 2019
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A sample of Hydrogen chloride gas occupies 0.750 L at STP. What is the pressure in atm if the volume is 0.100 L at 25 degrees Celsius?

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Step 1

All matter can be classified as solid, liquid and gases mainly. In these physical states of matter, the solid state is composed of particles with least intermolecular distance and strongest intermolecular force of attraction. On the contrary, the gaseous state of matter is composed of particles with largest intermolecular distance and weakest intermolecular force of attraction.  

Step 2

The gaseous state is the state of matter with least intermolecular force of attraction between molecules and highest kinetic energy. The standard properties of gases like Pressure, volume, and temperature can be calculated with the help of ideal gas equation.

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P x V n x R x T Here P Pressure V volume T temperature R gas constant n moles of gas

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Step 3

At STP conditions, volume of 1 mole of ideal gas is 22.4 L.

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1 mole 0.750 L = 0.033 moles 22.4 L

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Chemistry

Gas laws

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