Question

What volume at `"SLC"` is occupied by an `88*g` mass of carbon dioxide?

`A.` `49*L;`
`B.` `24.5*L;`
`C.` `98*L;`
`D.` `"Cannot be determined."`

Answer 1

Option `A`, `49` `L`.

Explanation:

Now you have `(88.0*g)/(44.0*g*mol^-1)` `=` `2*mol` `CO_2(g)`.

For this molar quantity of course we could solve the Ideal Gas equation, but, we know that `1` `mol` of Ideal Gas has a volume of `24.5` `L` under standard conditions of `298` `K` and `1` `atm`. I think that this is even given as supplementary information in the A level exams. Since we have `2` `mol`, there will be twice this molar volume.

The actual experimental volume will be very close to this value, as we have a regime of moderate pressures, and reasonably high temperatures.