the volume strenghth of 1.5 NH2O2 solution is
8.8
8.4
4.8
5.2
1.5N H2O2 means 2535 g H2O2 per litre,
2H2O2 −−→2H2O + O2. Now O2 liberated by 25.5 g H2O2 =22.4 × 25.568=8.4 litre.
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