객관식
When reactions occur in aqueous solutions, which of the following statements is correct?
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14. Solutions
Types of Aqueous Solutions
Multiple Choice
What type of aqueous solution is formed when solid sodium hydroxide (NaOH) is dissolved in water?
A
A buffer solution
B
A basic solution
C
An acidic solution
D
A neutral solution
검증된 단계별 안내1
Identify the nature of sodium hydroxide (NaOH). It is a strong base that dissociates completely in water.
Write the dissociation equation for NaOH in water: \(\mathrm{NaOH (s) \rightarrow Na^{+} (aq) + OH^{-} (aq)}\).
Recognize that the hydroxide ions (\(\mathrm{OH^{-}}\)) increase the concentration of hydroxide in the solution, making it basic.
Understand that a buffer solution requires both a weak acid and its conjugate base, which is not the case here since NaOH is a strong base.
Conclude that dissolving solid NaOH in water produces a basic aqueous solution due to the presence of excess hydroxide ions.
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