EXAMPLE 9.3 *Analysis of Adsorption Data Using the Langmuir Isotherm*. Slope and intercept values for the linearized plots of the data in Figure 9.7 are as follows:

Temperature (°C) |
Slope (g g |
Intercept (g g |

−15.3 |
1.9 |
0.040 |

0.0 |
2.0 |
0.047 |

20.0 |
2.0 |
0.088 |

Note that since *p*/*p*_{0} is used in the linearization, the abscissa is dimensionless and the slope and intercept have the same units. Figure 9.7 suggests that the data at −15.3 and 0.0°C converge to a common saturation value, but this is less clear for the data at 20°C. Do the linear plots clarify this situation? From the temperature dependence of the K’s for these data, estimate the adsorption energy in this system.

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