Use the Rackett equation to calculate the liquid-phase molar volume of each of the following species at the same temperature as the measured values reported. Which species had the greatest absolute percent error? The least? Can the trend be explained by molecular concepts?

Rackett equation

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(a) methane (CH4), (b) ethane (CH6), (c) n-octane (CsH18), (d) water (HO), (e) acetic acid (CH4O), Desp Vexp Vexp Dexp Dexp 37.7 cm/mol at 111 K 54.8 cm/mol at 183 K 162.5 cm/mol at 293 = 18.0 cm/mol at 293 K 57.2 cm/mol at 293 K = = = =