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Chapter 5: Q5.26P (page 228)

A sample of Freon-12 (CF2CI2) occupies 25.5 L at 298 K and 153.3 kPa. Find its volume at STP.

Short Answer

Expert verified

Answer

The volume at STP is 35.4 L.

Step by step solution

01

Ideal gas law

The ideal gas law equation is,

PV=nRT

The ideal gas law can also be written as,

P1V1T1=P2V2T2

(Moles of the sample are fixed)

02

Determination of final volume

P1V1T1=P2V2T2

Here,

V1is the initial volume (25.5 L).

V2is the final volume.

T1is the initial temperature (298 K).

T2is the final temperature (273 K).

P1is the initial pressure (153.3 kPa).

P2is the final pressure (101.325 kPa).

(As STP means, the temperature is 273 K and the pressure is 101.325 kPa).

V2=P1V1T1=P2V2T2V2=153.3kPa脳25.5L298K脳273K1010.325kPaV2=35.4L

Thus, the final volume at STP is 35.4 L.

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Most popular questions from this chapter

A sample of carbon monoxide occupies 3.65 L at 298 K and 745 torr. Find its volume at -14掳Cand 367 torr.

How does a sample of gas differ in its behavior from a sample of liquid in each of the following situations?

(a) The sample is transferred from one container to a larger one.

(b) The sample is heated in an expandable container, but no change of state occurs.

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(a) Half the gas escapes (at constantPandT).

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(c) Both the pressure and temperature decrease to one-fourth of their initial values.

If the sample flask in Figure P5.12 is open to the air, what is the atmospheric pressure (in atm)?
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