Answered

Which of the following pairs share the same empirical formula?


Select one:

ACH4 and C2H4
BPbCl2 and PbCl4
CN2O5 and NO2
DC2H6 and C4H12

Verified Answer :

C2H6 and C4H12 share the same emperical formula of CH3 as the both compounds can be reduced by the smallest subscript in each compound. So C2H6 will be reduced by 2 making CH3 and C4H12 can be reduced by 4 making CH3

Answer: The correct option is d.

Explanation: Empirical formula is a chemical formula which has the simplest ratio of elements present in a chemical compound.

From the given following pairs, the pair which shares the same empirical formula is \(C_2H_6\text{ and }C_4H_{12}\)

Empirical formula of \(C_2H_6\) is \(CH_3\) (by dividing the coefficients of \(C_2H_6\) by 3)

Empirical formula of \(C_4H_{12}\) is \(CH_3\) (by dividing the coefficients of \(C_4H_{12}\) by 3)

Both the chemical formulas have same empirical formula. Hence, the correct option is d.

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