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118. Solving a chemistry problem
Content: 211.rar 73,52 kB
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211. The table below shows the values of the volume (reduced to normal conditions) of nitrogen and argon, depending on the relative pressure of each of the gases, obtained in two series of experiments on the same sample of non-porous finely dispersed silica (SiO2) at -196 ° C.
p/ps 0.05 0.1 0.15 0.2 0.25 0.30 0.35 0.40
V, cm3/g (nitrogen) 34 38 43 46 48 51 54 58
V, cm3/g (argon) 23 29 32 38 41 43 45 50
Using the BET method, determine the specific surface area of the adsorbent from nitrogen adsorption data, knowing the landing site of this gas 0.162 nm2, and then, knowing the specific surface area of the sample, determine the landing site of argon from its adsorption data.
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