AP Chemistry Semester 1 Review

Front

What is the formula to calculate the dilution of a solution?

Back

The dilution formula is: \(C_1V_1 = C_2V_2\), where \(C_1\) is the concentration of the stock solution, \(V_1\) is the volume of the stock solution needed, \(C_2\) is the concentration of the diluted solution, and \(V_2\) is the total volume of the diluted solution.

Front

What is the hybridization of carbon in CH₂OH?

Back

The hybridization of carbon in CH₂OH is sp³.

Front

What is the molecular geometry of phosphorus pentachloride (PCl₅)?

Back

The molecular geometry of phosphorus pentachloride is trigonal bipyramidal.

Front

What property does distillation separate mixtures based on?

Back

Distillation separates mixtures based on differences in boiling point.

Front

Which molecule does not have resonance structures?

Back

Water (H₂O) does not have resonance structures.

Front

Define molarity (M).

Back

Molarity (M) is defined as the number of moles of solute per liter of solution: \(M = \frac{n}{V}\), where \(n\) is the number of moles and \(V\) is the volume in liters.

Front

What is the significance of resonance structures in chemistry?

Back

Resonance structures represent different ways of arranging electrons in a molecule, indicating that the actual structure is a hybrid of these forms, which can affect stability and reactivity.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons from one atom to another, resulting in charged ions, while covalent bonds involve the sharing of electrons between atoms.

Front

What is the ideal gas law equation?

Back

The ideal gas law is expressed as: \(PV = nRT\), where \(P\) is pressure, \(V\) is volume, \(n\) is the number of moles, \(R\) is the ideal gas constant, and \(T\) is temperature in Kelvin.

Front

What is the pH scale and what does it measure?

Back

The pH scale measures the acidity or basicity of a solution, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.