Molecular formula of pentahydroxy acid obtained when glucose is oxidised with $B r_{2}$ water is

C_{6} H_{12} O_{7}

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C_{6} H_{12} O_{8}

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C_{6} H_{12} O_{6}

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C_{6} H_{10} O_{6}

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Solution

The correct option is A $C_{6} H_{12} O_{7}$
Glucose on oxidation with bromine water yields $gluconic acid.$ $(C_{6} H_{12} O_{7} .)$ This reaction confirms the presence of $aldehyde group.$ Because for the formation of gluconic acid, free aldehyde group must be present.

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Similar questions

B r_{2} / H_{2} O

The molecular formula of glucose is $C_{6} H_{12} O_{6}$ . Calculate its molecular mass. (Atomic masses: C = 12 u; H = 1 u; O = 16 u)

{B r}_{2} / H_{2} O

C_{6} H_{12} O_{6}

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