Question:
Excess of carbon dioxide is passed through $50 \,mL$ of $0.5\, M$ calcium hydroxide solution. After the completion of the reaction, the solution was evaporated to dryness. The solid calcium carbonate was completely neutralised with $0.1\, N$ Hydrochloric acid. The volume of Hydrochloric acid required is (At. mass of calcium = $40$)
Excess of carbon dioxide is passed through $50 \,mL$ of $0.5\, M$ calcium hydroxide solution. After the completion of the reaction, the solution was evaporated to dryness. The solid calcium carbonate was completely neutralised with $0.1\, N$ Hydrochloric acid. The volume of Hydrochloric acid required is (At. mass of calcium = $40$)
Updated On: Jul 5, 2025
- $500\,cm^3$
- $400\,cm^3$
- $300\,cm^3$
- $200\,cm^3$
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The Correct Option is A
Solution and Explanation
No. of millimoles of $Ca ( OH )_{2}=50 \times 0.5=25$
No. of millimoles of $CaCO _{3}=25$
No. of milliequivalents of $CaCO _{3}=50$
$\therefore$ Volume of $0.1 \,N HCl =\frac{50}{0.1}=500 \,cm ^{3}$
No. of millimoles of $CaCO _{3}=25$
No. of milliequivalents of $CaCO _{3}=50$
$\therefore$ Volume of $0.1 \,N HCl =\frac{50}{0.1}=500 \,cm ^{3}$
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Chemistry is a vast subject and for understanding its significance we can take help of following points:
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Classification of Matter
There are two ways of classifying the matter:
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