Make a plot to see if the data are consistent with the Langmuir isotherm. If so, evaluate the constant K and Vo, the volume adsorbed when the surface is saturated. Answer is [13.6 kPa-1; 22

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The following are the volumes of ammonia, reduced to STP, adsorbed by a g charcoal at 273 K:

Pressure (kPa) Gas adsorbed (cm3)
6.8 74
13.5 111
26.7 147
53.1 177
79.4 189

Make a plot to see if the data are consistent with the Langmuir isotherm. If so, evaluate the constant K and Vo, the volume adsorbed when the surface is saturated.

Answer is [13.6 kPa-1; 222 cm3]

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