Question

Why fecl3 used as catalyst in decomposition of h2o2?

Answer 1

FeCl3 is used as a catalyst in the decomposition of H2O2 because It is not consumed within the reaction itself; the number of element gas collected couldn't modification if the number of FeCl3 was modified . it'd not modification the number of O2 gas collected as a result of FeCl3 is simply the catalyst; we might would like a lot of H2O2 to extend the number of FeCl3 collected.

2.)Since a number of the element and gas can dissolve in water, less moles of element and gas gas are collected, that makes the molar volume too low.