AP Chemistry Practice Questions

How many moles of oxygen atoms are in $2.5$ mol of $\text{Ca(NO}_3\text{)}_2$?

What is the ground-state electron configuration of a neutral iron (Fe, $Z = 26$) atom?

Which of the following correctly ranks the first ionization energies?

A mass spectrum of an element shows peaks at $m/z = 63$ (abundance $69\%$) and $m/z = 65$ (abundance $31\%$). The average atomic mass is closest to:

What is the molecular geometry of $\text{SF}_4$?

How many lone pairs are on the central atom in $\text{XeF}_2$?

Which compound is most likely ionic?

Which molecule is nonpolar despite having polar bonds?

Which intermolecular force is primarily responsible for the high boiling point of water?

A $2.0$ L container holds $0.50$ mol of gas at $300$ K. What is the pressure in atm? ($R = 0.0821$ L$\cdot$atm/(mol$\cdot$K))

What is the molarity of a solution prepared by dissolving $11.7$ g of NaCl ($M = 58.5$ g/mol) in enough water to make $500$ mL of solution?

Which type of solid typically has the highest melting point?

In the reaction $2\text{H}_2 + \text{O}_2 \to 2\text{H}_2\text{O}$, if $5.0$ mol of $\text{H}_2$ reacts with $2.0$ mol of $\text{O}_2$, how many moles of water are produced?

What is the net ionic equation for the reaction of $\text{AgNO}_3(\text{aq})$ with $\text{NaCl}(\text{aq})$?

The reaction $\text{Zn}(\text{s}) + \text{CuSO}_4(\text{aq}) \to \text{ZnSO}_4(\text{aq}) + \text{Cu}(\text{s})$ is best classified as:

If $25.0$ mL of $0.200$ M $\text{HCl}$ is needed to neutralize $50.0$ mL of $\text{NaOH}$, what is the concentration of $\text{NaOH}$?

For the reaction $A + B \to C$, doubling $[A]$ quadruples the rate, while doubling $[B]$ has no effect. The rate law is:

For a two-step mechanism where step 1 is slow and step 2 is fast, the rate law depends on:

A catalyst increases the rate of a reaction by:

For a first-order reaction with a rate constant $k = 0.0693$ s$^{-1}$, what is the half-life?