
www.instituteofscience.com [O] The Weight of Hydrogen Gas (H2). S.H. Shakman A study involving approximately 200 interdiffusing gaspairs supports a value of 4 for the weight of H2 gas in preference to a value of 2, on a scale of 32 for O2 gas. Table A lists ten illustrative gaspairs (AB); observed diffusion coef ficients (Do)*; calculations (Dc) based on viscosity data and conventionallyappraised molecular weight values*; cal culations (Dc') based on atomic numbers per equation Dc'= 8.9585sqrt(WAsqrtWB+WBsqrtWA)/WAWB, when gases (A,B) are assigned weight values (WA,WB) equal to double the sums of atomic numbers of component atoms, and 8.9585 adjusts raw calcula tions relative to the base of .181 for N2O2; and alternate calculations (Dc") identically derived as are Dc' except that H2 is arbitrarily assigned TABLE AOBSERVED vs CALCUL a WA value of 2 (thus WA and WB ATED DIFFUSION COEFFICIENTS values approximate convention AB Do Dc Dc' Dc" allyappraised weight values). H2N2 .674 .656 .703 1.133 Note that orders of agreement N2O2 .181 .175 .181BASE with observed values exhibited N2CO2 .144 .130 .149 by Dc' values (based on a value H2CO .651 .661 .703 1.133 of 4 for the weight of H2 rela CON2 .192 .174 .197 tive to 32 for (2) are (a) com COO2 .185 .175 .181 parable to those exhibited by H2O2 .697 .689 .651 1.053 the lessdirectly derived Dc O2CO2 .139 .128 .137 values and (b) preferable to H2CO2 .550 .544 .545 .885 those exhibited by Dc" values. CO2CO .137 .128 .149 *HIRSCHFELDER, J.O., CURTISS, C.F., and BIRD, R.B., Molecu lar Theory of Gases and Liquids (1954), p. 579. (As Newton affirmed,"More is in vain when less will serve.") BOOKS IOS instituteofscience.com      [1986 AAAS Abstract #212; 1986SHShakmanTxu242823] 19968 S. H. Shakman. All rights reserved.
