Question

What pressure will be exerted by 4 moles of CO2 at a temperature of 80 K and a volume 60 L?

Answer 1

ANSWER

The pressure of the gas is 0.4376 atm

EXPLANATION

Given information

The number of moles of CO2 = 4 moles

The temperature = 80K

The volume of the gas = 60L

To find the pressure of the gas, follow the steps below

Step 1: Assume the gas behaves like an ideal gas

Step 2: Write the ideal gas equation

$\text{ PV = nRT}$

Where

V = 60L

n = 4 moles

T = 80K

Step 3: Substitute the given data into the formula in step 1

$\begin{gathered} \text{ Recall, that R is the universal gas constant and it is 0.08205 L atm. mol}^{-1}.K^{-1} \\ \text{ P }\times\text{ 60 = 4 }\times\text{ 0.08205}\times\text{ 80} \\ \text{ 60P = 26.256} \\ \text{ Divide both sides by 60} \\ \text{ P = }\frac{26.256}{60} \\ \text{ P = 0.4376 atm} \end{gathered}$

Hence, the pressure of the gas is 0.4376 atm