(a)
Interpretation:
The temperature dependence of the vapor pressure of phosphoryl chloride difluoride is given, ln p against 1/T has to be plotted.
Concept introduction:
The relationship to plot is In P versus 1/T is given below.
(a)
Explanation of Solution
Given,
Temperature, T/K | 190 | 228 | 250 | 273 |
Vapour pressure, P/Torr | 3.2 | 68 | 240 | 672 |
Unit conversion is given below,
Therefore,
Temp. | V.P (Torr) | V.P (atm) | lnP | |
The ln p against 1/T plot is given below,
Figure 1
From the curve, slope is given below,
(b)
Interpretation:
The enthalpy of the vaporization has to be calculated.
Concept introduction:
Refer to part (a)
(b)
Explanation of Solution
The relationship to plot is In P versus 1/T, this gives a straight line.
From the curve, slope is given below,
The enthalpy of the vaporization is
(c)
Interpretation:
The entropy of the vaporization has to be calculated.
Concept introduction:
Refer to part (a)
(c)
Explanation of Solution
The relationship to plot is In P versus 1/T, this gives a straight line.
From the curve, slope is given below,
The entropy of the vaporization is
(d)
Interpretation:
The normal boiling point of phosphoryl chloride difluoride has to be calculated.
Concept introduction:
Refer to part (a)
(d)
Explanation of Solution
The normal boiling point of phosphoryl chloride difluoride is calculated when the vapor pressure is
Therefore, it will happen when.
The normal boiling point of phosphoryl chloride difluoride is
(e)
Interpretation:
If the pressure is 15 torr, temperature of phosphoryl chloride difluoride has to be calculated.
Concept introduction:
Refer to part (a)
(e)
Explanation of Solution
The temperature of phosphoryl chloride difluoride value is calculated as follows,
The temperature of phosphoryl chloride difluoride value is
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Chapter 5 Solutions
Chemical Principles: The Quest for Insight
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