45. Solution to Chemistry Problem

45. Solution to Chemistry Problem

4. The volume V of the substance [related to 273 K and 1.01*105 Pa (1 atm)] adsorbed by 1 g of adsorbent at 273 K and different pressures is given in the table:
1. plot the adsorption isotherm V — f (P) and P/V = f (P);
2. describe the adsorption isotherm using the Langmuir equation;
3. determine the adsorption (m3/g) at maximum filling of the adsorbent;
4. determine the degree of filling of the adsorbent at pressure P1;
5. determine at what gas pressure the degree of filling of the adsorbent will be 0.4.

T,K Adsorbent Adsorbate P1*10-4,Pa P*10-3,Pa V*106 m3/g
273 Coal NH3 5.0 10.50
21.60
42.70
65.60
85.20 60.40
90.30
115.70
127.00
132.40

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