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Glucose on reaction with HI gives n-hexa...

Glucose on reaction with HI gives n-hexane. What does it suggest about the structure of glucose ?

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Since n-hexane has six carbons connected is a straight chain ,therefore , this reaction suggests that glucose also the six carbon atoms connected in a straight chain.
`underset("Glucose")(HOCH_(2)CHOHCHOHCHOHCHOHCHO)overset(HI.Delta)to underset("n-Hexane")(CH_(3)CH_(2)CH_(2)CH_(2)CH_(2)CH_(3))`
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