Which of the following statements is/are correct ? 1.0g mixture of CaCO 3 (s ) and glass…
Chemistry · JEE Advanced · NTA Exams — Some Basic Concepts in Chemistry
Which of the following statements is/are correct ?
1.0g mixture of CaCO3(s ) and glass beads liberate 0.22g of CO2 upon treatment with excess of HCl. Glass does not react with HCl.
\(\mathrm{CaCO}_{3}+2 \mathrm{HCl} \longrightarrow \mathrm{CO}_{2}+\mathrm{H}_{2} \mathrm{O}+\mathrm{CaCl}_{2}\)
[Mw CaCO3 = 100 . Mw of CO2 = 44, [Atomic weight of Ca = 40]
1.0g mixture of CaCO3(s ) and glass beads liberate 0.22g of CO2 upon treatment with excess of HCl. Glass does not react with HCl.
\(\mathrm{CaCO}_{3}+2 \mathrm{HCl} \longrightarrow \mathrm{CO}_{2}+\mathrm{H}_{2} \mathrm{O}+\mathrm{CaCl}_{2}\)
[Mw CaCO3 = 100 . Mw of CO2 = 44, [Atomic weight of Ca = 40]
- The weight of CaCO3 in the original mixture is 0.5g.
- The weight of calcium in the original mixture is 0.2g.
- The weight percent of calcium in the original mixture is 40% Ca.
- The weight percent of Ca in the original mixture is 20% Ca.
Answer
(A) The weight of CaCO 3 in the original mixture is 0.5g., (B) The weight of calcium in the original mixture is 0.2g., (D) The weight percent of Ca in the original mixture is 20% Ca.
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