Question

Sodium peroxide which is a yellow solid, when exposed to air becomes white due to the formation of

Solution

Correct option is

NaOH and Na2CO3 

 

In presence of moisture and CO2 present in air, Na2O2 is converted to NaOH and Na2CO3 respectively both of which are white   

  

SIMILAR QUESTIONS

Q1

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

Q2

The solubility of alkali metal hydroxide follows the order:

Q3

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

Q4

Which of the following has the highest decomposition temperature?

Q5

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

Q6

Chloride of an element gives natural solution in water. In the periodic table the element belongs to

Q7

Among the following compounds of cement which is present in the highest amount?

Q8

The alkali metals form salt-like hydrides by the direct synthesis at elevated temperature. The thermal stability of these hydrides decreases in which of the following orders?

Q9

Which of the following on thermal decomposition yields a basic as well as an acidic oxide?

Q10

 

Choose the correct statement :

The reason for use of polyphosphates as water softening agents is, that