Question

consider the following compounds containing carbon and hydrogen: ch4, c2h4, c4h6, c4h10, c8h12, and c8h18 which of the compounds have the same empirical formula? (choose all that apply.) ch4 c2h4 c4h6 c4h10 c8h12 c8h18

Explanation:

Step1: Find empirical formula of \(CH_4\)

The ratio of \(C:H = 1:4\). So empirical formula is \(CH_4\)

Step2: Find empirical formula of \(C_2H_4\)

Divide sub - scripts by 2. Ratio \(C:H=1:2\). Empirical formula \(CH_2\)

Step3: Find empirical formula of \(C_4H_6\)

Divide sub - scripts by 2. Ratio \(C:H = 2:3\). Empirical formula \(C_2H_3\)

Step4: Find empirical formula of \(C_4H_{10}\)

Divide sub - scripts by 2. Ratio \(C:H=2:5\). Empirical formula \(C_2H_5\)

Step5: Find empirical formula of \(C_8H_{12}\)

Divide sub - scripts by 4. Ratio \(C:H = 2:3\). Empirical formula \(C_2H_3\)

Step6: Find empirical formula of \(C_8H_{18}\)

Divide sub - scripts by 2. Ratio \(C:H=4:9\). Empirical formula \(C_4H_9\)

Answer:

\(C_4H_6\) and \(C_8H_{12}\) have the same empirical formula.