If you’ve been following along with the periodic table, then it’s time to ask the question: How long does a sample of Cl2 take to effuse? This is an important lesson because when we’re talking about gases, there are two factors that determine how fast they’ll escape from their container.
The first factor is pressure.
The second factor is temperature.
In this blog post, we will discuss what happens as these two factors change and look at some examples using data from experiments done by chemists who study chemistry. .. Now let’s look at the temperature dependence. If you compare what happens to hydrogen when it is heated in a sealed container vs. helium, there are some major differences:
The general trend of effusion rates for substances on Earth increases with increasing temperature until about 100°C or boiling point where an increase in pressure can push liquid molecules faster through pores and out of the solution into vapour form.
At higher temperatures (i.e., >100 °C), this process does not measurably speed up because all available sites for molecules to escape from their bonds have been filled. For gases that don’t liquefy, like Argon, Carbon Dioxide or Helium, they will never reach a maximum rate.