Tiêu đề Hydrogen & Its Compound.pdf ✅

2 14. Half litre each of three samples of H2O2 labelled 10 vol., 15 vol., 20 vol. are mixed and then diluted with 1700 ml. of water. Calculate the relative strength of resultant H2O2 solution. [Volume Strength] 15. The oxidation state of manganese in the product obtained in a reaction of potassium permanganate and hydrogen peroxide in basic medium is_____. [Chemical Reaction] 16. To a 25 mLH2O2 solution, excess of acidified solution of potassium iodide was added. The iodine liberated required 20 mL of 0.3 N sodium thiosulphate solution. Calculate the volume strength of H2O2 solution (IIT JEE 1997) [Chemical Reaction]
3 ANSWER KEY 1. ( C ) 2. ( C ) 3 . ( B ) 4 . ( D ) 5 . ( A ) 6 . (A, B ) 7 . (A, B ) 8 . (A, B, C ) 9 . (A, B ) 10 . ( A, B ) 11 . ( 4 ) 12. ( 5 ) 13 . ( 9 ) 14 . ( 7 ) 15 . ( 4 ) 16. (1.344)