a Table: (This is an example of what your data table should look like.)   Pressure (kPa) Temperature (°C) Temperature (K) Constant, k (P / T or P•T) Ice water bath 91.58 2.4 275.55   Room temperature 96.54 21.1 294.25   Warm water 104.11 44.5 317.65   Boiling water 113.75 77.5 350.5   Calculations: One way to determine if a relationship is inverse or direct is to find a proportionality constant, k, from the data. If this relationship is direct, k = P/T. If it is inverse, k = P•T. Choose one of these formulas and calculate k for the pairs in your data table (divide or multiply the P and T values). Record the answers in the fourth column of the Data table.  How constant were the values for k you obtained in Question 4? Good data may show some minor variation, but the values for k should be relatively constant.  Comment on your calculated k values

General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter11: States Of Matter; Liquids And Solids
Section: Chapter Questions
Problem 11.145QP
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a Table: (This is an example of what your data table should look like.)

 

Pressure (kPa)

Temperature (°C)

Temperature (K)

Constant, k
(P / T or P•T)

Ice water bath

91.58

2.4

275.55

 

Room temperature

96.54

21.1

294.25

 

Warm water

104.11

44.5

317.65

 

Boiling water

113.75

77.5

350.5

 

Calculations:

  1. One way to determine if a relationship is inverse or direct is to find a proportionality constant, k, from the data. If this relationship is direct, k = P/T. If it is inverse, k = PT. Choose one of these formulas and calculate k for the pairs in your data table (divide or multiply the P and T values). Record the answers in the fourth column of the Data table. 
  2. How constant were the values for k you obtained in Question 4? Good data may show some minor variation, but the values for k should be relatively constant.  Comment on your calculated k values.

Analysis Questions:

  1. What does temperature measure?

 

  1. Look at your graph.  What type of relationship is there between temperature and pressure?  Write a statement that explains this relationship.

 

  1. When you look at your graph, when the temperature is zero, there is still pressure.  Therefore, the line does not cross at (0,0).  Where did your line cross?

 

  1. The ratio of P/T=m should be a constant amount.  But if we do the math, it doesn’t work out. Calculate the third column in the table below:

Pressure (mmHg)

Temperature (Celsius)

P/T

945

100

9.45

765

21.0

36.4

720

0.0

error

 

Calculate the y-intercept using y=mx + b for this set of data.

 

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