What general formula represents carbohydrates?

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Multiple Choice

What general formula represents carbohydrates?

Carbohydrates are built from repeating CH2O units, so their general formula expresses that repeating pattern as Cn(H2O)n. This form clearly shows both the number of carbon-containing units and the corresponding water units, and when expanded it becomes CnH2nOn, which is the same overall composition. Using this notation keeps the idea that you can have any number of units n, from simple sugars to long polysaccharides. The simpler empirical formula CH2O captures the ratio for a single repeating unit, but it doesn’t convey how many units are in a molecule. It’s not the general formula for all carbohydrates, just the basic unit’s composition. The other option, CnH4nOn2, would imply a different hydrogen-to-oxygen balance that doesn’t match carbohydrates’ typical composition.

Carbohydrates are built from repeating CH2O units, so their general formula expresses that repeating pattern as Cn(H2O)n. This form clearly shows both the number of carbon-containing units and the corresponding water units, and when expanded it becomes CnH2nOn, which is the same overall composition. Using this notation keeps the idea that you can have any number of units n, from simple sugars to long polysaccharides.

The simpler empirical formula CH2O captures the ratio for a single repeating unit, but it doesn’t convey how many units are in a molecule. It’s not the general formula for all carbohydrates, just the basic unit’s composition. The other option, CnH4nOn2, would imply a different hydrogen-to-oxygen balance that doesn’t match carbohydrates’ typical composition.

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