### Regents Chemistry Exam Explanations June

The table below shows data for the temperature, pressure, Which graph represents the relationship between relationship expected for an ideal gas?. Guillaume Amontons was the first to empirically establish the relationship between the pressure and the temperature of a gas (~), and Joseph Louis. I believe that at conditions of high temperature and low pressure then gasses tend to behave more like an ideal gas. Only at lower temperatures, high pressures.

If the pressure remains constant and the temperature is raised to K, the volume of the gas sample would be 1 A gas has a volume of 1, milliliters at a temperature of K and a pressure of 1. What will be the new volume when the temperature is changed to K and the pressure is changed to 0.

Which graph best shows the relationship between the pressure of a gas and its average kinetic energy at constant volume? A sample of gas has a volume of 2. When the volume increases to 4. Under which conditions will the volume of a given sample of a gas decrease? Which graph represents the relationship between volume and Kelvin temperature for an ideal gas at constant pressure? The volume of a 1. The volume of a sample of a gas is 1. If the pressure remains constant and the temperature is raised to K, the new volume of the gas will be 1 0.

The diagram below represents a gas sample confined in a cylinder fitted with a movable piston. A gas occupies a volume of At what temperature will the gas occupy a volume of Which changes in pressure and temperature occur as a given mass of gas at At constant pressure, which graph shows the correct relationship between the volume of a gas V and its absolute temperature T? As the piston moves toward point A at constant temperature, which mathematical relationship between pressure P and volume V remains constant?

If the pressure and Kelvin temperature of 2.

## 1. Which graph shows the pressure-temperature relationship expected for an ideal gas? 1) 3)

A gas has a pressure of kpa, a temperature of K, and a volume of What volume will the gas have at a pressure of 60 kpa and a temperature of A gas at STP has a volume of 1. If the pressure is doubled and the temperature remains constant, the new volume of the gas will be 1 0. Which graph best represents the pressure-volume relationship for an ideal gas at constant temperature?

A sample of gas occupies If the pressure is lowered to 1. K, the volume of the gas sample would be 1 5. At constant pressure, what temperature must be reached to increase a K to a volume of If the pressure of the gas is increased to 2.

At constant pressure, which curve best shows the relationship between the volume of an ideal gas and its absolute temperature? Which graph best represents how the volume of a given mass of a gas varies with the pressure exerted on it at constant temperature?

### Relationships among Pressure, Temperature, Volume, and Amount

If the volume of the gas is increased to liters at constant pressure, what is the new temperature of the gas in degrees Kelvin?

The new volume of the gas in milliliters ml is equal to 7 The graph below represents the relationship between pressure and volume of a given mass of a gas at constant temperature. If the pressure on The table above shows the changes in the volume of a gas as the pressure changes at constant temperature. The product of pressure and volume is constant. According to the graph, what is the product in atm ml? If the pressure is held constant and the temperature is lowered to K, the new volume of the gas will be 1 ml 3 ml 2 ml 4 ml A gas occupies a volume of ml at K and What is the final kelvin temperature when the volume of the gas is changed to ml and the pressure is changed to At a temperature of K, a If the pressure is changed to A gas sample has a volume of If the volume increases to The volume of a gas is 4.

For the volume of the gas to become 3. When volume goes up, pressure goes down.

## Why is Boyle's law graph curved?

From the equation above, this can be derived: This equation states that the product of the initial volume and pressure is equal to the product of the volume and pressure after a change in one of them under constant temperature. For example, if the initial volume was mL at a pressure of torr, when the volume is compressed to mL, what is the pressure? Plug in the values: The Temperature-Volume Law This law states that the volume of a given amount of gas held at constant pressure is directly proportional to the Kelvin temperature.

V Same as before, a constant can be put in: Also same as before, initial and final volumes and temperatures under constant pressure can be calculated.

The Pressure Temperature Law This law states that the pressure of a given amount of gas held at constant volume is directly proportional to the Kelvin temperature. P Same as before, a constant can be put in: The Volume Amount Law Amedeo Avogadro Gives the relationship between volume and amount when pressure and temperature are held constant. Remember amount is measured in moles. Also, since volume is one of the variables, that means the container holding the gas is flexible in some way and can expand or contract.

In other words, if temperature and pressure are constant, the number of particles is proportional to the volume. Another way to keep the pressure constant as the volume increases is to raise the average force that each particle exerts on the surface. This happens when the temperature is increased. So if the number of particles and the pressure are constant, temperature is proportional to the volume. This is easy to see with a balloon filled with air. A balloon at the Earth's surface has a pressure of 1 atm.

Heating the air in the ballon causes it to get bigger while cooling it causes it to get smaller. Partial Pressure According to the ideal gas law, the nature of the gas particles doesn't matter.

A gas mixture will have the same total pressure as a pure gas as long as the number of particles is the same in both. For gas mixtures, we can assign a partial pressure to each component that is its fraction of the total pressure and its fraction of the total number of gas particles.

The total pressure at sea level is 1 atm, so the partial pressure of the nitrogen molecules is 0. The partial pressures of all of the other gases add up to a little more than 0.