If your results showed a higher percentage of pure H 2 O 2 than shown by the man
ID: 693561 • Letter: I
Question
If your results showed a higher percentage of pure H2O2 than shown by the manufacturer’s label, how this may be the case? (Select all that apply)
The leveling bulb was lowered too much.
Some gas may have escaped from the apparatus.
Some of the hydrogen peroxide has decomposed over time in the bottle.
The pressure was recorded too high.
The temperature may have been recorded too low.
A.The leveling bulb was lowered too much.
B.Some gas may have escaped from the apparatus.
C.Some of the hydrogen peroxide has decomposed over time in the bottle.
D.The pressure was recorded too high.
E.The temperature may have been recorded too low.
Explanation / Answer
c. Some of the hydrogen peroxide has decomposed over time in the bottle. >>>>answer
On long standing H2O2 is decomposes. The decomposing of H2O2 decreases by the addition of small of negative catalyst as urea, sodium stannate, acetanilide, pyrophosphate The dilute aqueous solution of H2O2 are fairly stable in acid medium.
The concentration of H2O2 increases the decomposeing is increases.