Answer:
1.59 atm
Explanation:
The reaction is:
The dalton's law tell us that the total pressure of a mixture of gases is the sum of the partial pressure of every gas.
So after the reaction the total pressure is:
we don't include because it decomposed completely.
Assuming ideal gases
PV=nRT
P= pressure, V= volume of the container, n= mol of gas, R=constant of gases and T=temperature.
so moles of is:
from the reaction stoichiometry (1:1) we have that after the reaction the number of moles of each product is the same number of moles of .
The partial pressure of each gas is:
so total pressure is:
replacing the moles we get:
We know that T2=3*T1
replacing this value in the equation we get: