IB Chem 11 HL Fall Sem Final Review (2021)

Front

What is the rate expression for a reaction where A is first order and B is second order?

Back

rate = k [A] [B]^2

Front

How do you calculate the atomic mass of an element with multiple isotopes?

Back

Atomic mass = (mass1 * abundance1) + (mass2 * abundance2) / 100

Front

How do you determine the volume of a concentrated solution needed to prepare a diluted solution?

Back

Use the dilution formula: C1V1 = C2V2, where C is concentration and V is volume.

Front

What is the stoichiometric relationship in a neutralization reaction between H3PO4 and NaOH?

Back

1 mole of H3PO4 reacts with 3 moles of NaOH.

Front

How do you find the empirical formula from combustion data?

Back

Convert moles of CO2 and H2O to moles of C and H, then find the simplest whole number ratio.

Front

What is the definition of first-order reaction?

Back

A reaction where the rate is directly proportional to the concentration of one reactant.

Front

What is the definition of second-order reaction?

Back

A reaction where the rate is proportional to the square of the concentration of one reactant or the product of the concentrations of two reactants.

Front

What is the significance of isotopes in chemistry?

Back

Isotopes are variants of elements with the same number of protons but different numbers of neutrons, affecting atomic mass.

Front

What is the formula for calculating molarity?

Back

Molarity (M) = moles of solute / liters of solution.

Front

What is the empirical formula of a compound?

Back

The simplest whole number ratio of atoms of each element in a compound.