Most Important Selected Qs for JEE AdvancedChemistryRedox Reactions
10 ml of a sample of H ₂ O ₂ solution liberates 112 ml of O ₂ gas at STP upon decomposition. Identify the correct statement(s):
Options
- ANormality of the above sample of H ₂ O ₂ is 0.5 N
- B15 ml of the same sample of H ₂ O ₂ solution liberates 224 ml of O ₂ gas at 1.5 atm and 273^ C
- CMilliequivalents of hypo required for the titration of liberated I ₂ when 10 ml of the same sample of H ₂ O ₂
- D% (w/v) of given sample of H ₂ O ₂ is 3.4 % .
Correct answer
D. % (w/v) of given sample of H ₂ O ₂ is 3.4 % .
Step-by-step solution
10 ml of H ₂ O ₂ solution liberates 112 ml O ₂ at STP 1 ~L of H ₂ O ₂ solution liberates 11.2 LO ₂ at STP volume strength of H ₂ O ₂ solution =11.2 ~V N = V 5.6 = 11.2 5.6 =2 % w / v = N 17 10 =3.4 % 15 ml of same H ₂ O ₂ solution liberates 15 112 10 ml O ₂ at STP aligned & = 15 112 10 2 3 2 ml O ₂ at 1.5 ~atm and 273^ C & =224 ml O ₂ aligned meq. of H ₂ O ₂ reacted with KI = N V =2 10=20 meq. of hypo required =20