AIIMS 2017 Chemistry Normality and Molarity MCQ Question
of a mixture of and were dissolved and made up to . of this solution were completely neutralised by of solution. Then, the percentage of in the mixture is:
80
10
34
56
Correct Answer
Detailed Explanation
To find the percentage of KOH in the mixture, we calculated the total moles of hydroxide ions (OH⁻) produced, which is 0.085 moles. By setting up the equation for the total moles of KOH and NaOH based on their respective molar masses, we determined that the mass of KOH (x) is 0.35 g. This corresponds to a percentage of KOH in the mixture of approximately 30%, making option C correct. The other options (A, B, D) are incorrect as they do not accurately reflect the calculated mass of KOH relative to the total mass of the mixture.
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