Question

decomposition of nitrogen peroxide is known to be first order reaction. 75% of the oxide had decomposed in the first 24minutes. at the end of an hour after the start of the reaction the amount of oxide left over will be ???

Answer 1

Explanation:

CHEMISTRY

The dissociation of nitrogen pentoxide is a first order reaction. In first 24 min, 75% of nitrogen pentaxide is dissociated. What amount of nitrogen pentaoxide will be left behind after one hour of the start of reaction ?

A .

Approximately 1%

B .

Approximately 2%

C .

Approximately 3%

D .

None

November 22, 2019Shreal Rizwan

SHARE

ANSWER

For first-order reaction,

t75%=2t1/2

∴t1/2=224min=12min

n = Number of half lives in 1 hr (60 min) = 1260 = 5

Amount of substance left after 5 half lives-

(21)5=321

∴%ofamountleft=32100=3.125%≈3% 

here is your answer mate mark as brainliest ✌✌✌✌

Answer 2

Answer:

who is you?? are you from our school