19 StoichiometryMCQ1
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Questions and Answers

What type of formula indicates the actual number of atoms of each element present in a molecule of a compound?

  • Empirical Formula
  • Limiting Formula
  • Molecular Formula (correct)
  • Structural Formula

What is the term for the substance that is not present in excess in a chemical reaction?

  • Limiting Reagent (correct)
  • Excess Reagent
  • Product
  • Reactant

What type of formula indicates the arrangement of atoms within a molecule of a compound?

  • Structural Formula (correct)
  • Chemical Formula
  • Empirical Formula
  • Molecular Formula

What is the formula used to calculate the efficiency of a chemical reaction?

<p>Percentage Yield = Actual Yield divided by Theoretical Yield x 100 (C)</p> Signup and view all the answers

Which of the following formulas indicates the simplest whole number ratio of atoms of elements present in a compound?

<p>Empirical Formula (D)</p> Signup and view all the answers

What is the primary function of the limiting reagent in a chemical reaction?

<p>To dictate the amount of product formed (C)</p> Signup and view all the answers

What is the purpose of calculating the percentage yield of a reaction?

<p>To compare the actual yield to the theoretical yield (A)</p> Signup and view all the answers

What is the significance of the actual yield and theoretical yield in a reaction?

<p>The theoretical yield is the maximum amount of product that can be formed (A)</p> Signup and view all the answers

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