If your results showed a lower percentage of pure H 2 O 2 than shown by the manu
ID: 693547 • Letter: I
Question
If your results showed a lower percentage of pure H2O2 than shown by the manufacturer’s label, how this may be the case? (Select all that apply)
Some of the hydrogen peroxide has decomposed over time in the bottle.
The temperature may have been recorded too low.
The leveling bulb was lowered too much.
The pressure was recorded too high.
Some gas may have escaped from the apparatus.
A.Some of the hydrogen peroxide has decomposed over time in the bottle.
B.The temperature may have been recorded too low.
C.The leveling bulb was lowered too much.
D.The pressure was recorded too high.
E.Some gas may have escaped from the apparatus.
Explanation / Answer
a.
true, some H2O2 will decompose as time passes
b.
Not likely, since T only manages kinetics in this expeirment
c.
Not really, since the reference cancels each other
d.
if P is high, then H2 and O2 should have actually increased the H2O2 content ratio
e.
this is true, if plenty of H2 and O2 is gone, then we can't rleate to the H2O2 initially present, the amount will be lower