Properties and Reactions of Sodium Peroxide
Trending Questions
Q.
To an acidified dichromate solution, Na2O2 is added and shaken. What is observed?
Bluish-given precipitate
Blue colour
Copious evolution of oxygen
Orange colour changing to green directly
Q.
Sodium acts as as a strong reducing agent. Which of the following reaction/ reactions exemplifies this behaviour.
Q. It is a pale yellow powder, but on exposure to moisture and CO2 it turns to white. What are we talking about?
NaOH
Na2O2
Na2O
Q. A soft silver-white metal (A) burns with a golden-yellow flame to give a yellow powder (B) which on treatment with water liberates oxygen giving a clear solution (C). The solution, when mixed with Al, attacks the metal, liberating a gas (D) and forming a water-soluble compound (E). The metal (A) dissolves in liquid NH3 to form a deep blue solution which is a good conductor and an excellent reducing agent. Identify E:
- NaOH
- NaAlO2
- Ca(AlO2)2
- None of these
Q. A soft silver-white metal (A) burns with a golden-yellow flame to give a yellow powder (B) which on treatment with water liberates oxygen giving a clear solution (C). The solution, when mixed with Al, attacks the metal, liberating a gas (D) and forming a water-soluble compound (E). The metal (A) dissolves in liquid NH3 to form a deep blue solution which is a good conductor and an excellent reducing agent. Identify (D):
- N2
- Cl2
- NH3
- H2
Q. A soft silver-white metal 'A' burns with a golden-yellow flame to give a yellow power 'B, ' which on treatment with water gives a clear solution 'C'. The solution placed on Al attacks this metal, liberating a gas 'D' forming a water-soluble compound 'E'. The metal 'A' dissolves in liquid NH3 to form a deep-blue solution which is a good conductor and an excellent reducing agent. Identify 'C':
- KOH
- Al(OH)3
- NaOH
- LiOH
Q. 1) Na2O2Water−−−−→0 oCP+Q
2) Na2O2Water−−−−→25 oCP+R↑+S
Calculate the sum of bond orders between same bonded atoms in Q and R compounds.
2) Na2O2Water−−−−→25 oCP+R↑+S
Calculate the sum of bond orders between same bonded atoms in Q and R compounds.
Q. Which of the following does not contain the true peroxide ion?
- Na2O2
- H2O2
- BaO2
- SrO2
Q. On combustion in excess of air sodium mainly forms:
- NaO3
- None
- Na2O
- Na2O2
Q. It is a pale yellow powder, but on exposure to moisture and CO2 it turns to white. What are we talking about?
NaOH
Na2O2
Na2O