# Tag Info

### Why does wood burn but not sugar?

Combustion is a gas phase reaction. The heat of the flame vapourises the substrate and it's the vapour that reacts with the air. That's why heat is needed to get combustion started. Anyhow, wood ...
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### Does Br2/H2O oxidize all aldehydes including carbohydrates?

Aldehydes, including aldoses, are oxidized to their respective carboxylic acids in the presence of $\ce{Br2}$ in $\ce{H2O}$. The reason this reaction is often discussed with carbohydrates is that it ...
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### How can 32 g of Gatorade powder contain 33 g of carbohydrates?

Is there a chemical process as some people have suggested that is changing the 32g of powder into 33g of carbs once water is added? No. Even if there was, it's not relevant in this case: the numbers ...
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### How long would it take for sucrose to undergo hydrolysis in boiling water?

This is a nice well-defined question, and luckily there is excellent data for which we can provide a quantitative answer. Richard Wolfenden's research group has sought for many years to characterize ...
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### Why do other sugars melt whereas sucrose decomposes?

What you are doing when you heat a sugar like sucrose is you are dehydrating it. The crystalline structure of sucrose breaks down and the molecules decompose into glucose and fructose and then lose ...
• 573
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### How is it that fructose has a different metabolic pathway than glucose but yet glucose is converted to fructose?

The metabolic pathway you are talking about is how fructose is converted into energy and how its concentration in the blood is regulated. It is indeed true that blood fructose level does not affect ...
• 638
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### Carbon numbering in carbohydrates

Actually, the numbering is the same, at least for the fructose portion of the molecule (which is the right-hand monosaccharide in your sucrose image - the one on the left is glucose). The key point ...
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