Chapter 6, Problem 34A

Interpretation Introduction

Interpretation :

Right option must be chosen in which the pair of compounds have same empirical formula.

Concept Introduction :

Empirical formula is representation of simplest ratio of number of atoms in the molecule. It does not tell the actual number of atoms in the molecule.

Answer to Problem 34A

Correct answer Option A and C are correct.

Explanation of Solution

Reason for correct option:

The two compounds have molecular formula C₂H₂ and C₆H₆. For these two compounds the empirical formula is CH which is present 2 times in acetylene (C₂H₂) and 6 times in benzene (C₆H₆).

Option C is correct as NO₂ and N₂O₄ have empirical formula NO₂ which is present 1 time in NO₂ and 2 times in N₂O₄.

Conclusion

Reasons for incorrect options:

Option B is incorrect as C₂H₆ and C₄H₁₀ have empirical formulae CH₃ and C₂H₅ respectively which are not the same.

Option D is incorrect as C₁₂H₁₀O and C₆H₆O have different empirical formulae which are C₁₂H₁₀O and C₆H₆O respectively.