Moderate

The maximum No. of moles are present in

Correct answer: C. 67.2 dm3 of CO2 gas at STP.

  • A. 11.2 dm3 of H2 gas at STP.
  • B. 44.8 dm3 of N2 gas at STP.
  • C. 67.2 dm3 of CO2 gas at STP.
  • D. 22.4 dm3 of O2 gas at STP.

Explanation

In option C, 67.2 dm3 of CO2 is equal to 3 moles which is maximum in the given options. Hence option C is correct.

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About Fundamental Concepts of Chemistry

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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