Question

1500 ml flask contain 400 mg of O2 and 60 mg of H2 at 100C. calculate the total pressure in flask?​

Answer 1

Dear Student,

◆ Answer -

P = 87865 Pa

● Explanation -

Moles of oxygen gas in the container is -

n(O2) = 400×10^-3 / 32

n(O2) = 12.5×10^-3 mol

Moles of hydrogen gas in the container is -

n(H2) = 60×10^-3 / 2

n(H2) = 30×10^-3 mol

Total no of moles in container is -

n = n(O2) + n(H2)

n = 12.5×10^-3 + 30×10^-3

n = 42.5×10^-3 mol

n = 0.0425 mol

Using ideal gas equation,

PV = nRT

P = nRT/V

P = 0.0425 × 8.314 × 373 / 1500×10^-6

P = 87865 Pa

Therefore, pressure in the flask is 87865 Pa.

Thanks dear...