Advertisements
Advertisements
प्रश्न
Rohan heard that instructions were given to the laboratory attendent to store a particular chemical i.e., keep it in the darkroom, add some urea in it, and keep it away from dust. This chemical acts as an oxidising as well as a reducing agent in both acidic and alkaline media. This chemical is important for use in the pollution control treatment of domestic and industrial effluents. Write the name of this compound. Explain why such precautions are taken for storing this chemical.
Advertisements
उत्तर
\[\ce{H2O2}\] is decomposed by light and dust particles. Urea is added as a negative catalyst, i.e., to check its decomposition.
\[\ce{2H2O2 (l) -> 2H2O (l) + O2 (g)}\]
Because of the oxidizing properties, \[\ce{H2O2}\] is widely used to control pollution by oxidation of harmful cyanides and obnoxious smelling sulphides present in domestic and industrial effluents. It also helps in sewage disposal by supplying \[\ce{O2}\] for oxidation of organic matter present – in sewage waters.
APPEARS IN
संबंधित प्रश्न
Volume strength of 1.5 N H2O2 is
Explain the preparation of hydrogen using electrolysis.
Why does \[\ce{H+}\] ion always get associated with other atoms or molecules?
Hydrogen peroxide is obtained by the electrolysis of ______.
How is heavy water prepared? Compare its physical properties with those of ordinary water.
Rohan heard that instructions were given to the laboratory attendent to store a particular chemical i.e., keep it in the darkroom, add some urea in it, and keep it away from dust. This chemical acts as an oxidising as well as a reducing agent in both acidic and alkaline media. This chemical is important for use in the pollution control treatment of domestic and industrial effluents. Write the name of this compound.
Give a method for the manufacture of hydrogen peroxide and explain the reactions involved therein.
What mass of hydrogen peroxide will be present in 2 litres of a 5 molar solution? Calculate the mass of oxygen which will be liberated by the decomposition of 200 mL of this solution.
Which of the following will happen when a little hydrogen peroxide is added to a solution of ferrous sulphate?
Hydrogen peroxide for the first time was prepared by:
H2O2 can be obtained when the following reacts with H2SO4 except with:
The products obtained from a reaction of hydrogen peroxide and acidified potassium permanganate are ______.
In a basic medium, H2O2 exhibits which of the following reactions?
(A) \[\ce{Mn^{2+} -> Mn^{4+}}\]
(B) \[\ce{I2 -> I^-}\]
(C) \[\ce{PbS -> PbSO4}\]
Choose the most appropriate answer from the options given below.
The strength of the 11.2 volume solution of H2O2 is ______.
[Given that molar mass of H = 1 g mol−1 and O = 16 g mol−1)
