Questions: Chapter 7 - Part 2 - Homework Question 3 of 11 (9 points) Question Attempt: 1 of Unlimited What type(s) of intermolecular forces are present in each of the following molecules? Check all that apply for each part. Part 1 of 3 London dispersion Dipole-dipole Hydrogen bonding None of the above Part 2 of 3 H2O London dispersion Dipole-dipole Hydrogen bonding None of the above

Chapter 7 - Part 2 - Homework
Question 3 of 11 (9 points) Question Attempt: 1 of Unlimited

What type(s) of intermolecular forces are present in each of the following molecules? Check all that apply for each part.

Part 1 of 3
London dispersion
Dipole-dipole
Hydrogen bonding
None of the above

Part 2 of 3
H2O
London dispersion
Dipole-dipole
Hydrogen bonding
None of the above

Transcript text: Chapter 7 - Part 2 - Homework Question 3 of 11 (9 points) | Question Attempt: 1 of Unlimited What type(s) of intermolecular forces are present in each of the following molecules? Check all that apply for each part. Part 1 of 3 London dispersion Dipole-dipole Hydrogen bonding None of the above Part 2 of 3 $\mathrm{H}_{2} \mathrm{O}$ London dispersion Dipole-dipole Hydrogen bonding None of the above

Solution

Solution Steps

Step 1: Identify the Intermolecular Forces in Water ($\mathrm{H}_2\mathrm{O}$)

Water ($\mathrm{H}_2\mathrm{O}$) is a polar molecule due to the difference in electronegativity between hydrogen and oxygen, and its bent molecular shape. This polarity allows for different types of intermolecular forces to be present.

Step 2: Determine the Presence of London Dispersion Forces

London dispersion forces are present in all molecules, regardless of their polarity, because they arise from temporary fluctuations in electron density. Therefore, $\mathrm{H}_2\mathrm{O}$ has London dispersion forces.

Step 3: Determine the Presence of Dipole-Dipole Forces

Since $\mathrm{H}_2\mathrm{O}$ is a polar molecule, it exhibits dipole-dipole interactions. These forces occur between the positive end of one polar molecule and the negative end of another.

Step 4: Determine the Presence of Hydrogen Bonding

Hydrogen bonding is a special type of dipole-dipole interaction that occurs when hydrogen is bonded to a highly electronegative atom, such as oxygen, nitrogen, or fluorine. In $\mathrm{H}_2\mathrm{O}$, hydrogen is bonded to oxygen, allowing for hydrogen bonding.