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I&EC REPORTS
iuters necessary in solving the probEms of equilibrium-controlledchem$try involving complicated,molecuar structures, is making the field of norganic polymen profitable for Iondefense business. Inorganic chemistry is usually quilibrium-controlled so that proiortions and kinds of products are lest interpreted in terms of equiibrium constants rather than in erms of the mechanisms familiar in he kinetically controlled organic hemistry. To develop an undertanding of inorganic chemistry on a ,ar with organic chemistry it will be lecessary to delve deeply into thernodynamics and its underlying scinces, particularly application of tatistical mechanics and stochastics D molecular structures. Only by .etting so involved, according to Ir. Van Wazer, can we expect to ‘tailor-make’’ inorganic chemicals vith the facility that the organic hemist has exercised for some time.
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CORRECTION Please make the fallowing corrcctionr in the nrtidc beginning on page 52 of the April 1965 issue. In Figures 3, 9, 10, 13, 14, 17, and 18, the ordinate units should be mm. HrOIm.
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height. In Figures 4 and 5, ordinate units should be mm. H20/rtagc. In Figures 19 and 21, ordinate unit8 should be mm. H,O/thcoretical stage. In Figure 20, abrei.ra units shwld be mm. HIO/thcoretid stage. Figurer 3 and 9 arc drawn for systems at 10 torr. In Figure 5, the dotted line refers to a tray spacing of 150 mm. and the solid line, to Mo mm. In Figure 6, the u p p a dotted line is the q m p t o t c for a throughput of 2400 kg./hr. and the lower dotted line, far 600 kg./hr. The first line on p. 56 should read, I ‘ . . .-blc to carry out vacuum rectification at yml law bottom premura.” Add the following to the end of the lint paragraph, right column, p. 56, ‘I. .q is the quantity of heat of the rising vapor refwed to the I m column moss section.” Add tho following items to the list of nomenclature:
n = spacing between fwo op&
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I N ~ U S T R I A L A N D ENGINEERING C H E M I S T R Y
D = diffusion u~fficimt, sq. m./Mc. 0 = renuxratio The last term in Epuatian 3 should be: [./(a’
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