6 X, Y and Z are all gases that behave ideally and react according to the equation shown.
X(g) + 2Y(g) → 2Z(9)
When 3.0 mol of X and 3.0 mol of Y are placed inside a container with a volume of 1.0 dmº, they
react to form the maximum amount of Z.
The final temperature of the reaction vessel is 120°C.
What is the final pressure inside the reaction vessel?
А
4.49 x 10 Pa
B
9.80 x 106 Pa
C
1.47 x 10' Pa
D
1.96 x 10' Pa

D

Explanation:

PV=nRT

n=nx + my

n=3mol+3mol

n=6mol

T=120+273=393K

P=nRT/V

P=6×0.0821×393/1

P=193atm

1atm=1.01325×10^5Pa

193atm=xPa

x=1.96×10^7Pa

The atomic number for bromine is 35, which means it has 35 protons in its atomic nuclei . A neutral bromine atom would also have 35 electrons. In order for a bromine atom to become a 1 − bromide ion, it would have to gain an additional electron. Below is the Lewis dot structure for a neutral bromine atom, which has seven valence electrons.

Explanation: