Question

Consider the data in the table. Compound | Melting point (°C) | ?Hfus (kJ/mol) | Boiling point (°C) | ?Hvap (kJ/mol) HF | -83.11 | 4.577 | 19.54 | 25.18 HCl | -114.3 | 1.991 | -84.9 | 17.53 HBr | -86.96 | 2.406 | -67.0 | 19.27 HI | -50.91 | 2.871 | -35.38 | 21.16 Using the data in the table, calculate ?Sfus and ?Svap for HBr. ?Sfus = J/(K · mol) ?Svap = J/(K · mol) Determine the entropy change when 5.20 mol HBr(l) freezes at atmospheric pressure. ?S = J/K

          Consider the data in the table.

Compound | Melting point (°C) | ?Hfus (kJ/mol) | Boiling point (°C) | ?Hvap (kJ/mol)
HF | -83.11 | 4.577 | 19.54 | 25.18
HCl | -114.3 | 1.991 | -84.9 | 17.53
HBr | -86.96 | 2.406 | -67.0 | 19.27
HI | -50.91 | 2.871 | -35.38 | 21.16

Using the data in the table, calculate ?Sfus and ?Svap for HBr.

?Sfus = 
J/(K · mol)

?Svap = 
J/(K · mol)

Determine the entropy change when 5.20 mol HBr(l) freezes at atmospheric pressure.

?S = 
J/K

Consider the data in the table.

Compound | Melting point (°C) | ?Hfus (kJ/mol) | Boiling point (°C) | ?Hvap (kJ/mol)
HF | -83.11 | 4.577 | 19.54 | 25.18
HCl | -114.3 | 1.991 | -84.9 | 17.53
HBr | -86.96 | 2.406 | -67.0 | 19.27
HI | -50.91 | 2.871 | -35.38 | 21.16

Using the data in the table, calculate ?Sfus and ?Svap for HBr.

?Sfus =
J/(K · mol)

?Svap =
J/(K · mol)

Determine the entropy change when 5.20 mol HBr(l) freezes at atmospheric pressure.

?S =
J/K

Added by Thomas C.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Derrick Danso

08/17/2022

Step 1

406 kJ/mol Melting point = 86.96°C = 360.11 K ΔSfus = AHfus / T ΔSfus = 2.406 kJ/mol / 360.11 K ΔSfus = 0.006683 kJ/(mol*K) = 6.683 J/(mol*K) Show more…

Show all steps

Thanks for your feedback!

Consider the data in the table. Compound | Melting point (°C) | ΔHfus (kJ/mol) | Boiling point (°C) | ΔHvap (kJ/mol) HF | -83.11 | 4.577 | 19.54 | 25.18 HCl | -114.3 | 1.991 | -84.9 | 17.53 HBr | -86.96 | 2.406 | -67.0 | 19.27 HI | -50.91 | 2.871 | -35.38 | 21.16 Using the data in the table, calculate ΔSfus and ΔSvap for HBr. Determine the entropy change when 5.20 mol HBr(l) freezes at atmospheric pressure.