Multiple Choice
Which statement correctly describes the Arrhenius acid-base theory?
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17. Acid and Base Equilibrium
Arrhenius Acids and Bases
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In the Arrhenius model, what occurs when an acid and a base react in aqueous solution?
A
A neutralization reaction occurs, producing water and a salt.
B
The base donates ions to the acid, increasing the solution’s acidity.
C
The reaction always produces a gas as the primary product.
D
The acid and base combine to form only water, with no other products.
Verified step by step guidance1
Recall the Arrhenius definition of acids and bases: an Arrhenius acid increases the concentration of H\+ ions in aqueous solution, while an Arrhenius base increases the concentration of OH\- ions.
When an Arrhenius acid and base react in aqueous solution, the H\+ ions from the acid combine with the OH\- ions from the base.
This combination of H\+ and OH\- ions forms water (H\_2O), which is a neutral molecule.
Along with water, the remaining ions from the acid and base form a salt, which is an ionic compound.
Therefore, the overall reaction is called a neutralization reaction, producing water and a salt as products.
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