5、te: F2 (light yellow green), Cl2 (yellow green), Cu 2 (OH) 2CO3 (green) CuCl2 (concentrated solution green), FeSO4 (light green)(2) excited state: the flame of the copper element is green(3) chemical changes: Fe (OH) 2 (white) - gray green - Fe (OH) 3 (reddish brown)...
(OH) 2CO3, FeSO4/7H2O (light green), F2 (light yellow green), Cl2 (yellow green), chlorine water (pale yellow green) Red: CuO, Cu, Fe 2 + (SCN), methyl orange, purple litmus test solution in the acidic environment in the acidic environment, phenolphthalein, magenta in alkaline ...
The present invention is fast decolorizing and whitening method of color feather and down. FeSO4 is adopted as the bleaching activator for oxygen bleaching decolorizing of color feather and down at 20-25 deg.c, and dilute hydrochloric acid solution is then used in reducing Fe3+ ion before ...
In this exercise, the concentration of NBB was monitored by the UV-VIS spectroscopy, while the concentrations of H2O2, FeSO4 and different pH levels may be adjusted to enable students to obtain a wide range of reaction kinetic data. The reaction rate constant, kapp, can be estimated with a ...
HydrateofoxideChemicalcolorchemicalcolorofchemicalcolorFe(OH)3redbrownHNO2brightblueCu(OH)2blue5,salt,ChemicalcolorchemicalcolorofchemicalcolorCuFeS2yellowZnSwhiteAg2SblackFeSblackbrownFeS2yellowSb2S3blackororangeredHgSredPbSblackCuSblackCu2SblackFeCl3·6H2ObrownyellowFeSO49H20bluegreenFe2(SO4)3.9H2Obrownyellow...
NH4HCO3NH3=H2O+CO2=a+whitesolidliquid,tubewallhas disappeared,thelimewaterturbidgasammoniumbicarbonate long-termexposureintheairwilldisappear Zn+H2SO4=ZnSO4+H2=havealargenumberofbubbles,zinc particlesgraduallydissolvethelaboratorypreparationof hydrogen Fe+H2SO4=FeSO4+H2 = have a large number of bubbles, ...
With simultaneous aeration using 1000 l/h of air and pH-controlled addition of caustic soda solution with a concentration of 190 g/l of NaOH, 10.75 l of FeSO4 solution with a concentration of 200 g/l of FeSO4 are added dropwise over the course of 12 h so that the pH remains constant ...
CONSTITUTION:A silver halide color photosensitive material is stabilized by subjecting it to a stabilization treatment using a dye stabilizing solution kept in 3.0-9.0pH range, containing at least 1X10<-4>mol soluble iron salt, such as FeCl3, Fe2(SO4)3, FeCl2, FeSO4, or various kinds of ...
CONSTITUTION:A silver halide color photosensitive material is stabilized by subjecting it to a stabilization treatment using a dye stabilizing solution kept in 3.0-9.0pH range, containing at least 1X10<-4>mol soluble iron salt, such as FeCl3, Fe2(SO4)3, FeCl2, FeSO4, or various kinds of ...
(OH),2CO3,FeCl2,FeSO4,7H2O.Green:colorofconcentratedCuCl2solutionandpHtestpaperataboutpH=8.Darkgreen:K2MnO4.Yellowgreen:Cl2anditsCCl4extract.AccordingtothematerialforthecolorpurpleKMnO4isadeeppurple,redpurple,iodinesolutioninCCl4extract,iodinevapor,neutralpH,K+ionstripcolorflameetc..Theblackcolormaterial...