During combustion analysis, which one is used for absorbing carbon dioxide?
Correct answer: A. 50% KOH solution
- A. 50% KOH solution
- B. Mg(CLO4)2
- C. 5% KOH
- D. Silica gel
Explanation
During combustion analysis, CO2 is chemically absorbed in 50% KOH. While H2O vapors are physically absorbed in Mg(CLO4)2 because Mg(CLO4)2 is hygroscopic.
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Mole calculations connect mass, number of particles and Avogadro's number, while balanced equations provide the mole ratios used in stoichiometry. Questions cover limiting and excess reactants, theoretical yield and percentage yield, including identifying which reactant is consumed first and comparing the actual product with the maximum possible product.
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