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1. For each of the following substances, state whether the intermolecular forces

ID: 996302 • Letter: 1

Question

1. For each of the following substances, state whether the intermolecular forces are primarily hydrogen bonding, permanent dipole, or temporary dipole.

a. H2S

b. Cl2O

2. State whether the following compounds would be more soluble in a polar or nonpolar solvent.

a. PbI4

b. N2H4

3. For each of the following situations, state whether energy is released, absorbed, or unchanged, and whether entropy increases, decreases, or remains unchanged.

a. AgNO3(aq) + HCl(aq) AgCl(s) + HNO3(aq)

b. Building a molecular model from a kit.

4. Identify the solvent in each of the following solutions.

a. Beer

b. Au-Hg amalgam, a solid alloy consisting of 58% Hg and 42% Au

Explanation / Answer

hydrogen bonding, permanent dipole, or temporary dipole.

a. H2S ---------------> permanent dipole

b. Cl2O -------------->temporary dipole

2. State whether the following compounds would be more soluble in a polar or nonpolar solvent.

a. PbI4 ---------------->non- polar

b. N2H4 ------------> polar

3. For each of the following situations, state whether energy is released, absorbed, or unchanged, and whether entropy increases, decreases, or remains unchanged.

a. AgNO3(aq) + HCl(aq) AgCl(s) + HNO3(aq)

energy releases , entropy decreases

b. Building a molecular model from a kit.

energy abosrbed , entropy decreases

4. Identify the solvent in each of the following solutions.

a. Beer -----------> water

b. Au-Hg amalgam, a solid alloy consisting of 58% Hg and 42% Au ------------> Hg solvent