객관식
Which ions are formed from the dissociation of the following compound?
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17. Acid and Base Equilibrium
Arrhenius Acids and Bases
객관식
Which of the following is an Arrhenius base?
A
Mg(OH)2
B
BaO
C
CH3NH2
D
NH4+
E
H2SO4
검증된 단계별 안내1
Recall the definition of an Arrhenius base: a substance that increases the concentration of hydroxide ions (OH\(\textsuperscript{-}\)) when dissolved in water.
Examine each option to see if it produces OH\(\textsuperscript{-}\) ions in aqueous solution:
a) Mg(OH)\(\textsubscript{2}\) dissociates in water to give Mg\(\textsuperscript{2+}\) and 2 OH\(\textsuperscript{-}\) ions, so it fits the Arrhenius base definition.
b) BaO reacts with water to form Ba(OH)\(\textsubscript{2}\), which then dissociates to give OH\(\textsuperscript{-}\) ions, so BaO is also an Arrhenius base.
c) CH\(\textsubscript{3}\)NH\(\textsubscript{2}\) is a base but it does not produce OH\(\textsuperscript{-}\) directly; it is a Brønsted-Lowry base, not an Arrhenius base.
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