Question #d09ec

1 Answer
Feb 4, 2018

The Total Volume will decrease to:

100 - 0.20(100) = 80 cc

Explanation:

DATA

VT=100cc

Assume that all O2 reacted with the pyrogallol, I.e.:

VO_2=0cc

Assume: Ideal Gas
The volume of an ideal gas mixture (V) is equal to the sum of the component volumes (Vj’s) of each individual component in the gas mixture at the same temperature (T) and total pressure (P) of the mixture:

VTotal=VO_2+VN_2+Vothers

initially, at t = 0

100=0.20(100)+0.79(100)+0.01(100)

At t = 20min

The Total Volume will decrease to:

100 - 0.20(100) = 80 cc