Essential Chemistry for IGCSE - Chemical Calculations (Section 6 - No. 28)

If the empirical formula of a compound is CH and the relative formula mass is 26, what is the molecular formula?

C₂H₂

C₄H₄

Explanation

The empirical formula mass is 13 (12+1), so the number of times this repeats in the molecular formula is 26/13=2. Multiply the empirical formula by 2 to get C₂H₂

Essential Chemistry for IGCSE - Chemical Calculations (Section 6 - No. 28)

Explanation

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