The compounds Br_2 and ICI have the same number of electrons, yet Br_2 melts at

Question

The compounds Br_2 and ICI have the same number of electrons, yet Br_2 melts at -7.2 degree Celsius, whereas ICI melts at 27.2 degree Celsius. Explain List the types of intermolecular forces that exist in each of these species: benzene C_6H_6, CH_3Cl, PF_3, NaCI, and CS_2. Diethyl ether has a boiling point of 34.5 degree Celsius, and 1-butanol has a boiling point of 117 degree Celsius. Both of these compounds have the same numbers and types of atoms. Explain the difference in their boiling points. Predict the viscosity of ethylene glycol relative to that of ethanol and glycerol (see table 12.3) Europium crystallizes in a body-centered cubic lattice (the Eu atoms occupy only the lattice points). The density of Eu is 5.26 g/cm^3. Calculate the unit cell edge length in picometers. The molar heats of fusion and sublimation of molecular iodine are 15.27 kJ/mol and 62.30 kJ/mol. respectively. Estimate the heat of vaporization of liquid iodine Consider the phase diagram shown here. Label the regions. Predict what would happen if we did the following: Starting a A, we raise the temperature at constant pressure. Starting at C, we lower the temperature at constant pressure, and Starting at B, we lower the pressure at constant temperature.

Explanation / Answer

12.7. Br2 is completely non polar with no electronegativity difference. It only has very weak dispersion forces holding the molecule together.
ICl have somewaht of a EN difference, so its IMF is somewhat stronger, accounting for its higher melting poing

12.10. Benzene - Only dispersion forces

CH3Cl - Dipole - dipole forces and Dispersion forces

PF3 - Dipole- dipole and dispersion forces

NaCl - Ion - ion and Dispersion forces

CS2 - Only Dispersion forces

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.