Question

H₂O₂ is always stored in black bottles because
a) It is highly unstable
b) Its enthalpy of dissociation is high
c) It undergoes auto oxidation on prolonged standing
d) None of these

Answer 1

Could, hydrogen peroxide is highly unable and undergoes oxidation on reaction with heavy metals or heat.
unlike plastic bottles glass bottle contains some metals hence there is chance of converting in water or oxygen.
black bottle is us to protect from sun light to avoid oxidation