객관식
Which of the following compounds will turn a piece of red litmus paper to a bluish color?
a) HI b) C6H5NH2 c) CH3COOH d) HOCN
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17. Acid and Base Equilibrium
Bases Introduction
객관식
In an introductory acid–base context, an acid spill can be neutralized most appropriately by adding which of the following?
A
A base such as sodium bicarbonate ()
B
A strong acid such as hydrochloric acid ()
C
An oxidizing agent such as hydrogen peroxide ()
D
A neutral salt such as sodium chloride ()
검증된 단계별 안내1
Understand that an acid spill involves the presence of excess hydrogen ions (H\(\textsuperscript{+}\)) in the solution, making it acidic.
Recall that neutralization is a chemical reaction where an acid reacts with a base to form water and a salt, effectively reducing the acidity.
Identify that adding a base will provide hydroxide ions (OH\(\textsuperscript{−}\)) which react with the hydrogen ions (H\(\textsuperscript{+}\)) from the acid to form water (H\(\textsubscript{2}\)O), thus neutralizing the acid.
Recognize that sodium bicarbonate (NaHCO\(\textsubscript{3}\)) is a mild base that can safely neutralize acids by reacting to form water, carbon dioxide, and a salt, making it appropriate for acid spills.
Note that adding a strong acid, an oxidizing agent, or a neutral salt will not neutralize the acid spill; instead, they may worsen the situation or have no effect on acidity.
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