Question

At 32 grams, which compounds has the largest volume at STP

Answer 1

Task:

At 32 grams, which compounds has the largest volume at STP

Answer:

An Ideal gas law:

$$P \cdot V = n \cdot R \cdot T$$

P – pressure

V – volume

R – universal gas constant

T – Kelvin temperature

n – number of moles

At STP (standard temperature and pressure, T = 273 K, p = 1 atm) temperature and pressure remains constant.

The volume depends on the number of moles of compound.

The number of moles is:

$$n(\text{mol}) = \frac{m(g)}{MW(g/mol)}$$

That’s why the compound with the least molar weight has the largest number of moles and the largest volume.