Open Question
H2SO4 + KOH ⇌ H2O + K+ + HSO4-
Which is the base in the reaction?
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17. Acid and Base Equilibrium
Arrhenius Acids and Bases
Multiple Choice
Which compound is an Arrhenius base (i.e., produces in aqueous solution)?
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Verified step by step guidance1
Recall the definition of an Arrhenius base: it is a substance that increases the concentration of hydroxide ions (OH\(\textsuperscript{-}\)) when dissolved in water.
Examine each compound to determine if it produces OH\(\textsuperscript{-}\) ions in aqueous solution:
1. NaOH (sodium hydroxide) dissociates completely in water to give Na\(\textsuperscript{+}\) and OH\(\textsuperscript{-}\) ions.
2. CO\(\textsubscript{2}\) (carbon dioxide) dissolves in water to form carbonic acid (H\(\textsubscript{2}\)CO\(\textsubscript{3}\)), which is acidic, not basic.
3. NaCl (sodium chloride) dissociates into Na\(\textsuperscript{+}\) and Cl\(\textsuperscript{-}\) ions, neither of which produces OH\(\textsuperscript{-}\) ions.
4. HCl (hydrochloric acid) dissociates to produce H\(\textsuperscript{+}\) ions, making the solution acidic, not basic.
Therefore, identify the compound that produces OH\(\textsuperscript{-}\) ions in water, which matches the Arrhenius base definition.
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