# Pressure volume temperature moles relationship questions

### Gas Laws: Pressure, Volume, and Temperature | Boyle's Law | InformIT This relationship between temperature and pressure is observed for any sample then P and T are directly proportional (again, when volume and moles of gas are .. how pressure affects a number of issues related to their comfort and safety . The ideal gas law can be used in stoichiometry problems whose volume or pressure is directly proportional to the number of moles of gas. Problems · Return to KMT & Gas Laws Menu Boyle's Law gives the relationship between pressure and volume if temperature and amount are held.

Examples of simple gas calculations i 5 m3 volume of a gas at a pressure Pa was compressed to a volume of 2. Calculate the final pressure. Calculate the final volume of the gas. Boyle's Law for volume and gas pressure The particle theory of gas pressure was explained in Part 1 so this section concentrates on the gas law calculations involving pressure and volume. Boyle's Law states that for given mass of gas at a constant temperature oC or Kthe product of the pressure multiplied by the volume is a constant.

At lower temperatures the volume and pressure values are lower see next section.

## Gas Laws: Pressure, Volume, and Temperature

You can use any volume or pressure units you like as long as both p's and both V's have the same units. Using particle theory and simple arithmetical values to explain Boyles Law.

If a gas is compressed to half its original volume the concentration or density of the gas is doubled. However, at standard pressure, its volume was measured to be 8. What was the unknown pressure?

Notice the units of the pressure were not specified, so any can be used. If this were a test question, you might want to inquire of the teacher as to a possible omission of desired units. Let's use kPa since the other two pressure units were used above.

### ChemTeam: Gas Law - Boyle's Law

It's just a question of where the x is located. Two problems will arise during the gas laws unit in your classroom: How to match a given problem with what law it is, so you can solve it. Watching out for questions worded in a slightly confusing manner or with unnecessary information. Teachers like to do these sorts of things, if you haven't yet noticed. Here's an example of asking a question in a confusing manner: Equations of State Problems The majority of process operations involve material that is in a gaseous state.

These conditions are not isolated extremes, but rather conditions that are typically encountered in various hydrocarbon processing units. Given this wide range of operating conditions, it is critical that a process technologist understand the behavior of gases under extreme conditions. However, as just noted, many processes are carried out under conditions that are anything but normal. In general, the molecules, or atoms in the cases of the inert gases, are widely spaced. Consequently, their relatively small volume is insignificant and does not interfere with the relationships of pressure, volume, and temperature that we refer to as PVT.

But under the extreme conditions of high pressure and low temperature just described, that molecular volume does interfere and causes a gas to behave in a nonideal manner that results in a larger volume.