AP Chemistry Unit 1 and 2

What are the spectator ions in the reaction of sodium chloride with silver nitrate?

• silver and nitrate

• sodium and chloride

• sodium and nitrate

• silver and chloride

Usuing Graham's Law: If you had 2 identical balloons filled with Nitrogen gas (N₂) and Helium gas (He), which balloon will deflate the fastest?

• Helium balloon

• nitrogen balloon

• they will both deflate at the same rate

• the balloons will both pop

What explains the very high melting and boiling point of water

• Strong dipole-dipole bonds between water molecules

• Strong hydrogen bonds between water molecules

• Dispersion forces which are present in all molecules

• Asymmetrical shape of the polar bonds.

According to the reference table, what is the boiling point of ethanoic acid at 80 kPa?

• 28 ^oC

• 100^oC

• 111^oC

• 125^oC

At a constant pressure, the volume decreases.  What happens to the temperature?

• increases

• decreases

• stays the same

Under which of the following conditions do REAL gases behave most like IDEAL gases?

• High pressure and high temperature

• High pressure and low temperature

• Low pressure and low temperature

• Low pressure and high temperature

• Flask 1 contain the most molecules
• Flask 2 contain the most molecules
• Flask 3 contain the most molecules
• Flask 4 contain the most molecules

If a gas has the same temperature throughout, which gas molecule has the highest average velocity?

• O₂

• H₂O

• H₂

• Xe

Which equation represents Dalton's Law?

• E = mc²

• PV = nRT

• P1 / T1 = P2 / T2

• P_total = P1 + P2 + P3

The weaker the intermolecular forces of a substance the _____________ the boiling point

• higher

• lower