Question

23. How many molecules of \(\mathrm{HCl}\) are formed when \(80.0 \mathrm{~g}\) of water reacts according to the following balanced reaction? Assume excess ICl_3.

$$ \mathrm{ICl}_{3}+\mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{ICl}+\mathrm{HIO}_{3}+\mathrm{HCl} $$

A) \(4.46 \times 10^{24}\) molecules \(\mathrm{HCl}\)

B) \(2.68 \times 10^{24}\) molecules \(\mathrm{HCl}\)

C) \(8.04 \times 1024\) molecules \(\mathrm{HCl}\).

D) \(5.36 \times 10^{24}\) molecules \(\mathrm{HCl}\)

E) \(4.46 \times 1025\) molecules \(\mathrm{HCl}\)

24. Determine the oxidation state of \(\mathrm{P}\) in \(\mathrm{PO}_{3}^{3-}\)

A) \(+3\)

B) \(+6\)

C) \(+2\)

D) 0

E) - 3

25. Give the complete ionic equation for the reaction (if any) that occurs when aqueous solutions of \(\mathrm{MgSO}_{3}\) and \(\mathrm{HI}\) are mixed.

A) \(2 \mathrm{H}^{+}(\mathrm{aq})+\mathrm{SO}_{3}^{2-}(\mathrm{aq}) \rightarrow \mathrm{H}_{2} \mathrm{SO}_{3}(\mathrm{~s})\)

B) \(\mathrm{Mg}^{2+}(\mathrm{aq})+21^{-}(\mathrm{aq}) \rightarrow \mathrm{Mgl2}(\mathrm{s})\)

C) \(2 \mathrm{H}^{+}(\mathrm{aq})+\mathrm{SO}_{3}^{2-}(\mathrm{aq})+\mathrm{Mg} 2+(\mathrm{aq})+2 \mathrm{l}(\mathrm{aq}) \rightarrow \mathrm{H}_{2} \mathrm{SO}_{3}(\mathrm{~s})+\mathrm{Mgl}_{2}(\mathrm{aq})\)

D) \(2 \mathrm{H}^{+}(\mathrm{aq})+\mathrm{SO}_{3}^{2-}(\mathrm{aq}) \rightarrow \mathrm{H}_{2} \mathrm{O}(\mathrm{l})+\mathrm{SO}_{2}(\mathrm{~g})\)

E) No reaction occurs.

26. What mass (in g) of \(\mathrm{AgCl}\) is formed from the reaction of \(75.0 \mathrm{~mL}\) of a \(0.078 \mathrm{M} \mathrm{AgC}_{2} \mathrm{H}_{3} \mathrm{O}_{2}\) solution with \(55.0 \mathrm{~mL}\) of \(0.109 \mathrm{M} \mathrm{MgCl}_{2}\) solution?

$$ \mathrm{AgC}_{2} \mathrm{H}_{3} \mathrm{O}_{2}(\mathrm{aq})+\mathrm{MgCl}_{2}(\mathrm{aq}) \rightarrow \mathrm{AgCl}(\mathrm{s})+\mathrm{Mg}\left(\mathrm{C}_{2} \mathrm{H}_{3} \mathrm{O}_{2}\right)_{2}(\mathrm{aq}) $$

A) \(0.838 \mathrm{~g}\)

B) \(1.72 \mathrm{~g}\)

C) \(0.859 \mathrm{~g}\)

D) \(2.56 \mathrm{~g}\)

E) \(1.70 \mathrm{~g}\)

Answer 1