Question

When i BF, is bombarded with neutrons, the boron-10 undergoes an decay, but the F is u A 0.20-mol sample of 1oBF3 contained in a 3.0-L container at 298 K is bombarded with neutrons until half of the 1°BFs has reacted. What is the pressure in the container at 298 K (10 pts)?

Answer 1

Given that V = 3 L

                T = 298 K

                no of moles n, = 0.2/2= 0.1 mol [since, half of the 10BF₃ is reacted]

Ideal gas equation is

PV = nRT

P = nRT/V

= 0.1 mol x 0.0821 L.atm/K/mol x 298 K/ 3 L

= 0.815 atm

P = 0.815 atm

Therefore,

pressure inside the container = 0.815 atm