8. Identify the weakest acid in each of the following sets, and explain your reasoning. a. H2SO3, HCIO3, HCIO4 b. H2PO4-, H3PO4, HPO42-
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In the series of oxoacids, the acidity increases with the number of oxygen atoms bonded to the central atom. This is because the electronegativity of oxygen pulls electron density away from the O-H bond, making it easier to lose a proton (H+). H2SO3 has 3 oxygen Show more…
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Identify the weakest acid in each of the following sets. Explain your reasoning. (a) $\mathrm{H}_{2} \mathrm{SO}_{3}, \mathrm{HClO}_{3}, \mathrm{HClO}_{4} \quad(\mathrm{b}) \mathrm{NH}_{3}, \mathrm{H}_{2} \mathrm{O}, \mathrm{H}_{2} \mathrm{S}$ (c) $\mathrm{B}(\mathrm{OH})_{3}, \mathrm{Al}(\mathrm{OH})_{3}, \mathrm{Ga}(\mathrm{OH})_{3}$
Identify the strongest acid in each of the following sets. Explain your reasoning. $\begin{array}{ll}{\text { (a) } \mathrm{H}_{2} \mathrm{O}, \mathrm{HF}, \text { or } \mathrm{HCl}} & {\text { (b) } \mathrm{HClO}_{2}, \mathrm{HClO}_{3}, \text { or } \mathrm{HBrO}_{3}} \\ {\text { (c) } \mathrm{HBr}, \mathrm{H}_{2} \mathrm{S}, \text { or } \mathrm{H}_{2} \mathrm{Se}}\end{array}$
Arrange each group of compounds in order of decreasing acid strength. Explain your reasoning. $\begin{array}{ll}{\text { (a) } \mathrm{H}_{2} \mathrm{O}, \mathrm{H}_{2} \mathrm{S}, \mathrm{H}_{2} \mathrm{Se}} & {\text { (b) } \mathrm{HClO}_{3}, \mathrm{HBrO}_{3}, \mathrm{HIO}_{3}} \\ {\text { (c) } \mathrm{PH}_{3}, \mathrm{H}_{2} \mathrm{S}, \mathrm{HCl}}\end{array}$
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