Preparation of glucose from cane sugar.
`underset("Cane sugar")(C_(12)H_(22)O_(11))+H_(2)O overset("dil. HCl or")(underset(underset(Delta "alcoholic")("dil." H_(2)SO_(4)))rarr) underset("Glucose")(C_(6)H_(12)O_(6))+underset("Fructose")(C_(6)H_(12)O_(6))`
On cooling the reaction mixture, glucose separate out because it is less soluble in alcohol and fructose remains in the solution crystals of glucose are then filtered and purified by recrystallization.
Formula of complex copper (II) hexacyano ferrate (II) is `Cu_(2)[Fe(CN)_(6)]`.
