它可分为还原性和脱氢型。还原型抗坏血酸能还原染料2,6-二氯酚靛酚（DCPIP），本身则氧化为脱氢型。在酸性溶液中，2,6-二氯酚靛酚呈红色，还原后变为无色。因此，当用此染料滴定含有维生素C的酸性溶液时，维生素C尚未全部被氧化前，则滴下的染料立即被还原成无色。一旦溶液中的维生素C已全部被氧化...
所以先选DCPIP做vitamin C既indicator的~~~ chemical reaction 如下~~~ DCPIP (blue) + H+ ---> DCPIPH (pink) DCPIPH (pink) + VitC ---> DCPIPH2 (colourless) C6H8O6 + C12H7NCl2O2 ---> C6H6O6 + C12H9NCl2O2 详请可以睇下维基点讲嘅。可惜只有英文~~~ 希望帮到你啦=...
It reduces dichlorophenol indophenol (DCPIP), changing it from blue to colourless. An inquiry into the effect of heating on ascorbic acid Reagents: Reduced glutathione, Sulphanilamide, N-(1-Napthyl) ethylene diamine dihydrochloride (NEDD), NADH, 2,6-dichlorophenol indophenol (DCPIP) were purchas...
(e) Citrus fruits are a good source of vitamin C.DCPIP can be used to test for vitamin C. When DCPIP reacts with vitamin C the colour of the solution changes from dark blue to colourless.Vitamin C can be destroyed by heating it at high temperatures or by heating it for a long time...
(e)Citrus fruits are a good source of vitamin C.DCPIP can be used to test for vitamin C. When D CPIP reacts with vitamin C the colour of the solution changes from dark blue to colourless.Vitamin C can be destroyed by heating it at high temperatures or by heating it for a long tim...