Consider the data in the table. Compound Melting point (°C) ????? (??/???)ΔHfus (kJ/mol) Boiling point (°C) ????? (??/???)ΔHvap (kJ/mol) HFHF −83.11 4.577 19.54 25.18 HClHCl −114.3 1.991 −84.9 17.53 HBrHBr −86.96 2.406 −67.0 19.27 HIHI −50.91 2.871 −35.38 21.16 Using the data in the table, calculate Δ?fusΔSfus and Δ?vapΔSvap for HF.HF. Δ?fus=ΔSfus=   J/(K⋅mol)J/(K⋅mol) Δ?vap=ΔSvap=   J/(K⋅mol)J/(K⋅mol) Determine the entropy change when 7.60 mol HF(l)7.60 mol HF(l) boils at atmospheric pressure. Δ?=ΔS=   J/K

1:29 O Hint: the normal boiling point is when the vapor pressure reaches 1 atm. Use, N

For each compound in the table below, decide whether there would be any hydrogen-bonding force between molecules of the compound, or between molecules of the compound and molecules of water. name compound hydrogen bromide hypochlorous acid ethane formula or Lewis structure HBr HCIO H H I I HC C-H | | H H Between molecules of the compound? O C yes no yes no O yes no hydrogen-bonding force Between molecules of the compound and molecules of water? 00 00 yes no yes no yes no X

How many joules of energy are absorbed when 36.2 grams of water is evaporated?  ΔHfus = 6.01 kJ/mol ΔHvap = 0.0845 kJ/ mol