STANDARDChemistry-Solutions and Colligative Properties
STANDARD Chemistry Buffer Solutions MCQ Question
Type: MCQ-conceptual-Medium
Which of the following will produce a buffer solution when mixed in equal volumes?
A
0.1 mol dm⁻³ NH₄OH and 0.1 mol dm⁻³ HCl
B
0.05 mol dm⁻³ NH₄OH and 0.1 mol dm⁻³ HCl
C
0.1 mol dm⁻³ NH₄OH and 0.05 mol dm⁻³ HCl
D
0.1 mol dm⁻³ CH₃COONa and 0.1 mol dm⁻³ HCl
Correct Answer
Option C
Detailed Explanation
In 0.1 mol dm⁻³ NH₄OH and 0.05 mol dm⁻³ HCl, the total amount of HCl reacts with NH₄OH to form NH₄Cl and some NH₄OH will be left unreacted. Thus, the resultant solution contains NH₄Cl and NH₄OH which will produce a buffer solution.
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