Question

I just started learning about kinetic molecular theory, and I’m not sure how to answer the question circled below

Answer 1

Answer : The value of 'R' is
`0.0821\text{ L atm }mol^(-1)K^(-1)`

Solution : Given,

At STP conditions,

Pressure = 1 atm

Temperature = 273 K

Number of moles = 1 mole

Volume = 22.4 L

Formula used :
`R=(PV)/(nT)`

where,

R = Gas constant

P = pressure of gas

T = temperature of gas

V = volume of gas

n = number of moles of gas

Now put all the given values in this formula, we get the values of 'R'.

`R=((1atm)* (22.4L))/((1mole)* (273K))`

`R=0.0821\text{ L atm }mol^(-1)K^(-1)`

Therefore, the value of 'R' is
`0.0821\text{ L atm }mol^(-1)K^(-1)`.