Open Question
Classify these compounds as acid, base, salt, or other. drag the appropriate items to their respective bins.
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17. Acid and Base Equilibrium
Bases
Multiple Choice
Which of the following is a typical property of a base (in aqueous solution)?
A
It has a pH greater than .
B
It increases the concentration of in water.
C
It reacts with metals to produce gas as its defining property.
D
It turns blue litmus paper red.
Verified step by step guidance1
Recall the definition of a base in aqueous solution: a base is a substance that increases the concentration of hydroxide ions (OH\(\textsuperscript{-}\)) when dissolved in water.
Understand that pH is a measure of the acidity or basicity of a solution, where pH less than 7 indicates acidic, pH equal to 7 is neutral, and pH greater than 7 indicates basic (alkaline) solution.
Recognize that a typical property of a base is that it has a pH greater than 7, meaning it decreases the concentration of hydronium ions (H\(\textsubscript{3}\)O\(\textsuperscript{+}\)) and increases OH\(\textsuperscript{-}\) concentration.
Note that increasing the concentration of H\(\textsubscript{3}\)O\(\textsuperscript{+}\) ions is a property of acids, not bases.
Remember that bases do not typically react with metals to produce hydrogen gas as a defining property, and they turn red litmus paper blue, not blue litmus paper red.
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