Question

The label on a bottle of H2O2 solution reads as ’10 volume’. The concentration of H2O2 in percentage by volume is

Solution

Correct option is

3.03%

 

From equation, it is clear that 22400 ml O2 is formed by 68 gm of H2O2

= 3.03 gm

SIMILAR QUESTIONS

Q1

On passing hydrogen over heated palladium, the gas

Q2

Which one of the alkaline earth metals shows some anomalous behavior and has same electronegativity as aluminium?

Q3

When magnesium burns in air compounds of magnesium formed are magnesium oxide and

Q4

A solid compound ‘X’ on heating gives CO2 gas and a residue. The residue mixed with water forms ‘Y’. On passing an excess of CO2 through ‘Y’ in water, a clear solution ‘Z’ is obtained. On boiling ‘Z’, compound ‘X’ is reformed. The compound ‘X’ is 

Q5

The carbonate that will not decompose on heating is

Q6

The correct order of increasing thermal stability of K2CO3, MgCO3, CaCO3 and BeCO3 is: 

Q7

In which of the following the hydration energy is higher than the lattice energy?

Q8

The solubility of alkali metal hydroxide follows the order:

Q9

Which of the following has the highest decomposition temperature?

Q10

Bleaching powder slowly loses its activity when it stands in air. This is due to