Hydrogen peroxide may be represented as H2O2 or HO-OH, with contrast to normal oxides the oxidation number of oxygen in peroxide is -1.
They are the same chemical.
The difference between 6%, 9%, and 12% Hydrogen Peroxide solution is the Hydrogen content.
Temperature
There is no reaction between H2O2 and K2Cr2O7 because both are oxidants.
"Regular" hydrogen peroxide often contains a small amount of acetanilide as a stabilizing agent.
Chemically speaking, a peroxide is a molecule which contains two oxygen atoms bonded together by a single bond. Hydrogen peroxide is one common peroxide, but there are many others. The oxygen-oxygen bond is fairly weak, and peroxides tend to be somewhat unstable.
The difference between a hydrogen atom and atomic hydrogen is that the "hydrogen atom" represents one atom of the chemical element hydrogen. Atomic hydrogen are isolated hydrogen atoms.
AR is analytical reagent and LR laboratory reagent; practically differences are not significant and depends on the reagents company.
reaction betwen sodiumbisulphite and hydrogen peroxide
covalent the electronegitivity of carbon is 2.1 the electronegitivity of oxygen is 3.5 if the difference between them is less then 1.67, then the bond is covalent. if the difference between them is more than 1.67, then the bind is ionic 3.5-2.1=1.4 so the bond of hydrogen peroxide is covalent because the difference between the electronegitivities is less than 1.67
Water is H2O 2 atoms of Hydrogen and one atom of Oxygen Peroxide is H2O2 2 atoms of Hydrogen and 2 atoms of Oxygen.