Question
How glucose is prepared from cane suger?
✓
Answer
Preparation of glucose from cane sugar:Cane sugar (sucrose) is boiled with dilute hydrochloric acid or sulphuric acid. Cane sugar is hydrolyside into equimolar mixture of glucose and fructose.
$\underset{\text { cane sugar }}{ C _{12} H _{22} O _{11}}+ H _2 O \xrightarrow[\Delta]{\text { dil HCL or } H _2 SO _4} \underset{\text { glucose }}{ C _6 H _{12} O _6}+\underset{\text { fructose }}{ C _6 H _{12} O _6}$
The mixture is cooled and alcohol is added during cooling. Glucose crystallises out and fructose remains in solution. Glucose crystals are separated by filtration.
$\underset{\text { cane sugar }}{ C _{12} H _{22} O _{11}}+ H _2 O \xrightarrow[\Delta]{\text { dil HCL or } H _2 SO _4} \underset{\text { glucose }}{ C _6 H _{12} O _6}+\underset{\text { fructose }}{ C _6 H _{12} O _6}$
The mixture is cooled and alcohol is added during cooling. Glucose crystallises out and fructose remains in solution. Glucose crystals are separated by filtration.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Write chemical equation for preparation of sulphur dioxide from sulphur. Write uses of sulphur.
The reaction $A + B \longrightarrow$ products is first order in each of the reactants.
(a) How does the rate of reaction change if the concentration of $A$ is increased by factor 3 ?
(b) What is the change in the rate of reaction if the concentration of $A$ is halved and concentration of $B$ is doubled?
→(a) How does the rate of reaction change if the concentration of $A$ is increased by factor 3 ?
(b) What is the change in the rate of reaction if the concentration of $A$ is halved and concentration of $B$ is doubled?
Henry's law constant for the solubility of methane in benzene is $4.27 \times 10^{-5} mm ^{-1} Hg _{ mold } dm ^{-}$ ${ }^3$ at constant temperature. Calculate the solubility of methane at $760 mm Hg$ pressure at same temperature.
→The rate constant for a zero order reaction is $0.04 Ms ^{-1}$. Calculate the half-life period of the reaction, when the initial concentration of the reactant is $0.01 M$.
→At $50^{\circ} C$ the value of ionic product of water is $5.5 \times 10^{-14}$. What are the concentrations of $\left[ H _3 O ^{+}\right]$and $OH ^{-}$in a neutral solution at $50^{\circ} C$ temperature?
→Is the complex $[CoF_6]$ cationic or anionic if the oxidation state of cobalt ion is $+3$?
→What is the action of concentrated nitric acid on $(1)$ Benzaldehyde $(2)$ Benzophenone?
→Write one example of each of bidentate and ambidentate ligand.
How is ethanol prepared from methanal by using Grignard reagent?
