A definite volume of H_(2)O_(2) under going spontaneous decomposition required 22.8 cc. of standard permanganate solution for titration. After 10 and 20 minutes respectively the volumes of permanganate required were 13.8 and 8.25 c.c. (a) Find order of reaction. How many the result be explained ? (b) Calculate the time required for the decomposition to be half completed. (c) Calculate the fraction of H_(2)O_(2) decomposed after 25 minutes.

A definite volume of H_(2)O_(2) under going spontaneous decomposition

1.	A definite volume of H_(2)O_(2) under going spontaneous decomposition required 22.8 cc. of standard permanganate solution for titration. After 10 and 20 minutes respectively the volumes of permanganate required were 13.8 and 8.25 c.c. (a) Find order of reaction. How many the result be explained ? (b) Calculate the time required for the decomposition to be half completed. (c) Calculate the fraction of H_(2)O_(2) decomposed after 25 minutes.
Answer» SOLUTION :(a) first order, (B) 13.75 minutes, (C ) 0.716