Question

7.2 Pfeffer's experiment van 't Hoff based his theory on the experimental results of W. Pfeffer. Here are some of Pfeffer's original data for the pressure II needed to stop osmotic flow between pure water and a sucrose solution, across a copper ferrocyanide mernbrane at T-15°C sugar concentration (g/(100 g of water) II (mm of mercury) 535 1016 1518 2082 3075 2.74 4 6 a88 of sucrose is about 342gmele and graph them. Draw some conclusions. b. Pfeffer also measured the effect of temperature. At a fixed concentration of (1 g sucrose)/(100 g water) he found: temperature (°C) 7 14 ? (mm of mercury) 525 548 544 32 36 Again convert to SI units, graph, and draw conclusions 7.3 Erperinental pitfalls

Answer 1

Date 100x1-ka loo ka 1003 3 초 Lene 0.S3S 1S18 2.082 2.74 3.0 .5 L.0 0-5 Sugar comen-

Jempesaticre) 모 14 22, 32. 3 6 .SOS S2S 0.S48 Dist노 D ,96チ Me 0 S4 14 2 28 3S C°c) hate