Calculate the pressure, in atmospheres, exerted by each of the following:

a) 2.50 L HF containing 1.35 mol at 320.0 G

b) 4.75 L NO2 containing 0.86 mol at 300.0 K

c) 5.50 * 104 mL CO2 containing 2.15 mol at 57°C

a) 14.2 atm

b) 4.46 atm

c) 1.06 atm

Explanation:

For an ideal gas,

PV = nRT

P = pressure of the gas

V = volume occupied by the gas

n = number of moles of the gas

R = molar gas constant = 0.08206 L. atm/mol. K

T = temperature of the gas in Kelvin

a) For HF,

P = ?, V = 2.5L, n = 1.35 moles, T = 320K

P = 1.35 * 0.08206 * 320/2.5

P = 14.2 atm

b) For NO₂

P = ?, V = 4.75L, n = 0.86 moles, T = 300K

P = 0.86 * 0.08206 * 300/4.75

P = 4.46 atm

c) For CO₂

P = ?, V = 5.5 * 10⁴ mL = 55L, n = 2.15 moles, T = 57°C = 330K

P = 2.15 * 0.08206 * 330/55

P = 1.06 atm