Problem: Plot the following data and determine ΔH vap for magnesium and lithium. In which metal is the bonding stronger?

🤓 Based on our data, we think this question is relevant for Professor Griffith's class at UMD.

FREE Expert Solution

Clausius-Clapeyron equation:


ln P=-HvapR 1T + C  y  =     m    x  +   b


Higher ΔHvap → stronger bond


Using the given data (convert °C to  K):


Vapor Pressure

ln Pvap

T, Li (°C)

T, Li (K)

1/T, Li

1

0

750

1023

0.000978

10

2.302585

890

1163

0.00086

100

4.60517

1080

1353

0.000739

400

5.991465

1240

1513

0.000661

760

6.633318

1310

1583

0.000632



Vapor Pressure

ln Pvap

T, Mg (°C)

T, Mg (K)

1/T, Mg

1

0

620

893

0.00112

10

2.302585

740

1013

0.000987

100

4.60517

900

1173

0.000853

400

5.991465

1040

1313

0.000762

760

6.633318

1110

1383

0.000723


Plot ln P(y-axis) vs. 1/T (x-axis):




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Problem Details

Plot the following data and determine ΔH vap for magnesium and lithium. In which metal is the bonding stronger?

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What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Griffith's class at UMD.

What textbook is this problem found in?

Our data indicates that this problem or a close variation was asked in Chemistry: An Atoms First Approach - Zumdahl 2nd Edition. You can also practice Chemistry: An Atoms First Approach - Zumdahl 2nd Edition practice problems.