Question

A 1.25 g sample of CO2 is contained in a 750 mL flask at 22.5°C. What is the pressure of the gas?

Answer 1

Answer: 0.918 atm

Step-by-step explanation:

Given that

M=1.25g

V= 750g = 0.75 L

T = 22.5 + 273.15= 295.65 K

M(Co2) = 44.01g/moL

N(co2) =1.25/44.01 = 0.0284moL

Ideal gas law:-

pV = nRT

R = 0.08206 L×atm/moL×K

P= nRT/V

SO,

P = 0.0284×0.08206×295.65/0.75

P = 0.918atm