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Question 8.CC.3: Strengths of Acids and Bases For each of the following quest......

Strengths of Acids and Bases
For each of the following questions, select from  \mathrm{HCO_{3}}^{-},\mathrm{H}_{2}\mathrm{SO}_{4}, or  \operatorname{HNO}_{2} :
a. Which is the strongest acid?
b. Which acid is the weakest?

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a. The strongest acid in this group is the acid listed closest to the top of Table 8.3, which is \mathrm{H}_{2}\mathrm{SO}_{4} .
b. The weakest acid in this group is the acid listed closest to the bottom of Table 8.3, which is {\mathrm{{HCO}}_{3}}^{-} .

TABLE 8.3 Common Strong and Weak Acids
Strong Acids
Hydroiodic acid HI
Hydrobromic acid HBr
Perchloric acid \mathrm{H}\mathrm{CIO}_{4}
Hydrochloric acid HCl
Sulfuric acid \mathrm{H}_{2}\mathrm{SO}_{4}
Nitric acid {\mathrm{{HNO}}_{3}}
Weak Acids
Hydronium ion {\mathrm{H}_{3}\mathrm{O}}^{+}
Hydrogen sulfate ion {\mathrm{H}\mathrm{SO}_{4}}^{-}
Phosphoric acid \mathrm{H}_{3}\mathrm{PO}_{4}
Hydrofluoric acid HF
Nitrous acid {\mathrm{{HNO}}_{2}}
Acetic acid \mathrm{HC}_{2}\mathrm{H}_{3}\mathrm{O}_{2}
Carbonic acid \mathrm{H}_{2}\mathrm{CO}_{3}
Hydrosulfuric acid \mathrm{H}_{2}\mathrm{S}
Dihydrogen phosphate {\mathrm{H}_{2}\mathrm{PO}_{4}}^{2-}
Ammonium ion {\mathrm{NH}_{4}}^{+}
Hydrocyanic acid HCN
Bicarbonate ion {\mathrm{{HCO}}_{3}}¯
Hydrogen sulfide ion HS¯
Water \mathrm{H}_{2}\mathrm{O}

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