Question: Without referring to Table 11.6, predict which compound in each of the following pairs has the higher melting point: (a) H 2 O or H

Without referring to Table 11.6, predict which compound in each of the following pairs has the higher melting point:

(a) H₂O or H₂S

(b) H₂S or H₂Se.

Table 11.6

TABLE 11.6 Group VIA/16 Hydrogen Compounds Molar Mass Compound (g/mol) HO HS HSe HTe 18 34 81 130 Mp (C) 0.0 -85.5 -60.4 -48.9 Bp (C) 100.0 -60.7 -41.5 -2.2 Hfusion (cal/mol) 1440 568 899 1670 Hvapor (cal/mol) 9720 4450 4620 5570

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