Test: Hydrogen Peroxide (Old NCERT) - NEET MCQ

Hydrogen peroxide’s chemical formula is H₂O₂ and it was discovered by J.L. Thenard in 1818. It is an important compound used in the treatment of pollution control treatment of Industrial and domestic effluents.

The volume strength of hydrogen peroxide is 11.2 times of molarity, which is mathematically represented by X = 11.2 M; where X is the volume strength of hydrogen peroxide and M is the molarity.

Hydrogen peroxide, represented by H₂O₂, is stored in acetanilide or sodium pyrophosphate, the presence of traces of alcohol, which slows down the rate of decomposition of hydrogen peroxide (H₂O₂).

One of the most important chemical properties of hydrogen peroxide i.e. H₂O₂ is that it is acidic in nature. It is weakly acidic in nature and pure hydrogen peroxide turns blue Litmus red (an indication of acidic nature).

Hydrogen peroxide, whose chemical formula is given by H₂O₂, acts as an oxidizing agent as well as a reducing agent in both acidic and basic medium also. Hydrogen peroxide is an amphoteric substance.

When 2 moles of potassium iodide are reacted with 1 mole of hydrogen peroxide, 2 moles of potassium hydroxide and one mole of iodine is liberated. That means hydrogen peroxide liberates iodine from acidified potassium iodide.

30% of hydrogen peroxide is called Perhydrol, which is used as an antiseptic and germicide for washing wounds, teeth, and ears. The volume strength of Perhydrol is hundred and its molarity is given by 8.8

Hydrogen peroxide has many uses one of the most important uses of hydrogen peroxide is that it acts as a source of power i.e. 90% of hydrogen peroxide is used as fuel and submarines, rockets and helicopters.

Hydrogen peroxide is used as a bleaching agent, disinfectant, source of power, in the restoration of old paintings in which lead oxide is used as a white paint, antiseptic and germicide. It is not used in teardrops.

In the solid form of hydrogen peroxide, the angle between oxygen and hydrogen is 104.9 and the angle between the two planes is 92.5. In the liquid or gaseous form of hydrogen peroxide, the angle between oxygen and hydrogen as 94.8 and the angle between the two planes is 111.5

The relation between the volume strength of the hydrogen peroxide and normality is given by X = 5.6 x N, therefore volume strength = 5.6 multiplied by 2N. The volume strength of the hydrogen peroxide is given by 11.2

The relation between percentage strength and volume strength of hydrogen peroxide is given by 56 times of percent strength is equal to 17 times of volume strength, which is mathematically represented by; %strength = 17/ 56 X volume strength.

Generally a solution of hydrogen peroxide is labeled as 10volume, which actually means that 1 ml of such a solution of hydrogen peroxide on decomposition by heat produces 10 ml of oxygen at NTP.