Chapter 5: Q5.26P (page 228)

A sample of Freon-12 ( $C F_{2} C I_{2}$ ) 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

Ideal gas law

The ideal gas law equation is,

$P V = n R T$

The ideal gas law can also be written as,

$\frac{P_{1} V_{1}}{T_{1}} = \frac{P_{2} V_{2}}{T_{2}}$

(Moles of the sample are fixed)

Determination of final volume

$\frac{P_{1} V_{1}}{T_{1}} = \frac{P_{2} V_{2}}{T_{2}}$

Here,

$V_{1}$ is the initial volume (25.5 L).

$V_{2}$ is the final volume.

$T_{1}$ is the initial temperature (298 K).

$T_{2}$ is the final temperature (273 K).

$P_{1}$ is the initial pressure (153.3 kPa).

$P_{2}$ is the final pressure (101.325 kPa).

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

$V_{2} = \frac{P_{1} V_{1}}{T_{1}} = \frac{P_{2} V_{2}}{T_{2}} V_{2} = \frac{153.3 kPa \times 25.5 L}{298 K} \times \frac{273 K}{1010.325 kPa} V_{2} = 35.4 L$

Thus, the final volume at STP is 35.4 L.

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A sample of Freon-12 ( $C F_{2} C I_{2}$ ) occupies 25.5 L at 298 K and 153.3 kPa. Find its volume at STP.

Short Answer

Step by step solution

Ideal gas law

Determination of final volume

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

Short Answer

Step by step solution

Ideal gas law

Determination of final volume

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Chemistry Textbooks

Chemical Reactions

Chemical Analysis

Ionic and Molecular Compounds

Chemistry Branches

Organic Chemistry

The Earths Atmosphere

Study anywhere. Anytime. Across all devices.

A sample of Freon-12 ( $C F_{2} C I_{2}$ ) occupies 25.5 L at 298 K and 153.3 kPa. Find its volume at STP.