AP Chemistry Thou Shall Not Forget Unit 3

Front

What happens to vapor pressure and volatility as intermolecular forces (IMFs) increase?

Back

Vapor pressure and volatility decrease as intermolecular forces increase.

Front

Which compound has the strongest intermolecular forces? CH4, C2H2, C4H8, C8H14

Back

C8H14 has the strongest intermolecular forces.

Front

What does 'more polarizable' refer to in terms of intermolecular forces?

Back

'More polarizable' refers to London dispersion forces.

Front

In a Maxwell-Boltzmann curve, which curve represents the most particles?

Back

All curves represent the same number of particles.

Front

What is the volume of one mole of an ideal gas at STP?

Back

22.4 L.

Front

Define intermolecular forces (IMFs).

Back

Intermolecular forces are forces of attraction or repulsion between neighboring particles (atoms, molecules, or ions).

Front

What are the three main types of intermolecular forces?

Back

The three main types are hydrogen bonding, dipole-dipole interactions, and London dispersion forces.

Front

Explain hydrogen bonding.

Back

Hydrogen bonding is a strong type of dipole-dipole interaction that occurs when hydrogen is bonded to highly electronegative atoms like N, O, or F.

Front

What is the relationship between molecular size and London dispersion forces?

Back

As molecular size increases, London dispersion forces also increase due to greater polarizability.

Front

What is the significance of STP in gas calculations?

Back

STP (Standard Temperature and Pressure) is used as a reference point for gas calculations, defined as 0°C (273.15 K) and 1 atm pressure.