When one mole of hydrogen peroxide reacts with one mole of sodium hydroxide, it forms :
A
Sodium peroxide.
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B
Sodium hydroperoxide.
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C
Sodium oxide.
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D
(b) and (c) above.
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Solution
The correct option is B Sodium hydroperoxide. When one mole of hydrogen peroxide reacts with one mole of sodium hydroxide, it forms an acidic salt (sodium hydroperoxide)
The reaction is : NaOH+H2O2⟶NaHO2Sodium hydroperoxide+H2O
Theory :
Acidic nature:
Anhydrous hydrogen peroxide is acidic in nature (Ka=1.55×10−12 at 298 K)
Its dissociation in an aqueous solution may be given as: H2O2+H2O→H3O+HO−2
Two types of salts are formed:
Acidic Salt: NaOH+H2O2→NaHO2Sodium hydroperoxide+H2O
Normal Salt: 2NaOH+H2O2→Na2O2Sodium peroxide+2H2O