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Chemistry · May / June 2024 · Paper 11 · Question 6

5070Formulae

Statements about empirical and molecular formulae are given. Which statement is correct?

  1. AThe empirical and molecular formulae of a compound are always different.
  2. BThe empirical formulae of ethyne, C2H2, and of benzene, C6H6, are the same.
  3. CThe molecular formula always shows the simplest whole-number ratio of the different atoms or ions in a compound.
  4. DThe empirical formula always shows the numbers and types of different atoms in one molecule of a compound.

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Correct answer: B. The empirical formulae of ethyne, C2H2, and of benzene, C6H6, are the same.

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