Carbon dioxide Boyle temperature

Figure 2.8 shows a Boyle s-law plot of pressure p (as y) against volume V (as x) for carbon dioxide. The figure is drawn as a function of temperature. Each line on the graph represents data obtained at a single, constant temperature, and helps explain why we call each line an isotherm. The uppermost isotherm represents data collected at 31.5 °C. Its shape is essentially straightforward, although it clearly shows distortion. The middle trace (at... 

Reducing the pressure from 121 kPa to 101 kPa increases the volume of the carbon dioxide gas. Therefore, Boyle s law gives the factor 121 kPa/101 kPa. Because this factor is greater than 1, when it is multiplied by the volmne, the volume increases. Cooling the gas from 117°C to 0.00°C reduces the volume of gas. To apply Charles s law, you must express both temperatures in kelvins. 

Calculate the Boyle temperatures for carbon dioxide, oxygen, and nitrogen using the van derWaals constants in Table 1.6. How close do they come to the experimental values from Table 1.5 ... 

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