Answer:
The total pressure in the flask is 1,14 atm
Explanation:
We need to apply the Ideal Gas law to get the moles and then find out the total moles in the mixture
moles H2 + moles N2
P.V = n. R . T
1,50 L . 3,50atm = n . 0,08206 (L*atm)/(mol*K) . 298K
(1,50 L . 3,50atm) / 0,08206 (mol*K)/(L*atm) . 298K = n
(5,25 / 24,45) mol = n = 0,215 moles H2
2,55 atm . 2,00 L = n . 0,08206 (L*atm)/(mol*K) . 298K
(2,55 atm . 2,00 L) / 0,08206 (mol*K)/(L*atm) . 298K = n
(5,1 / 24,45) mol = n = 0,208 moles N2
Total moles = moles H2 + moles N2
0,215 moles H2 + 0,208 moles N2 = 0,423 moles
P.V = n. R . T
P . 9,10L = 0,423moles . 0,08206 (L*atm)/(mol*K) . 298K
P = (0,423moles . 0,08206 (L*atm)/(mol*K) . 298K ) / 9,10L
P = 1,14 atm
