I have experience teaching Thermodynamics and chemical kinetics (Chem 360). I also TAed the following courses: Introductory chemistry and lab (Chem 111), General chemistry lab II (Chem 126), Inorganic chemistry lab (Chem 236W), Physical chemistry lab I (Chem 266), Atoms, molecules, spectroscopy (Chem 260), Science and its impact on society (Sci 300)
Arsenic An atom of arsenic has how many electroncontaining orbitals? How many of the orbitals are completely filled? How many of the orbitals are associated with the atom’s n = 4 principal energy level?
Write the formula and give the name of the conjugate acid of each of the following bases.(a) $\mathrm{NH}_{3}$(b) $\mathrm{HCO}_{3}^{-}$(c) $\mathrm{Br}^{-}$
What are the products of each of the following acid-base reactions? Indicate the acid and its conjugate base, and the base and its conjugate acid.(a) $\mathrm{HClO}_{4}+\mathrm{H}_{2} \mathrm{O} \longrightarrow$(b) $\mathrm{NH}_{4}^{+}+\mathrm{H}_{2} \mathrm{O} \longrightarrow$(c) $\mathrm{HCO}_{3}^{-}+\mathrm{OH}^{-} \longrightarrow$
Write balanced equations showing how the HPO $_{4}^{2-}$ ion of sodium hydrogen phosphate, $\mathrm{Na}_{2} \mathrm{HPO}_{4},$ can be a Bronsted acid or a Bronsted base.
In each of the following acid-base reactions, identify the Bronsted acid and base on the left and their conjugate partners on the right. $$\begin{aligned}&\text { (a) } \mathrm{C}_{5} \mathrm{H}_{5} \mathrm{N}(\mathrm{aq})+\mathrm{CH}_{3} &\mathrm{C}_{5} \mathrm{H}_{5} \mathrm{NH}^{+}(\mathrm{aq})+\mathrm{CH}_{3} \mathrm{CO}_{2}^{-}(\mathrm{aq})\end{aligned}$$(b) $\mathrm{N}_{2} \mathrm{H}_{4}(\mathrm{aq})+\mathrm{HSO}_{4}^{-}(\mathrm{aq}) \rightleftarrows \mathrm{N}_{2} \mathrm{H}_{5}^{+}(\mathrm{aq})+\mathrm{SO}_{4}^{2-}(\mathrm{aq})$.(c) $\left[\mathrm{Al}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}(\mathrm{aq})+\mathrm{OH}^{-}(\mathrm{aq}) \rightleftarrows$$\left[\mathrm{Al}\left(\mathrm{H}_{2} \mathrm{O}\right)_{5} \mathrm{OH}\right]^{2+}(\mathrm{aq})+\mathrm{H}_{2} \mathrm{O}(\ell)$.
A saturated solution of milk of magnesia, $\mathrm{Mg}(\mathrm{OH})_{2},$ has a pH of $10.52 .$ What is the hydronium ion concentration of the solution? What is the hydroxide ion concentration? Is the solution acidic or basic?
