Is pressure or temperature the independent variable?

The intensive state variables (e.g., temperature T and pressure p) are independent on the total mass of the system for given value of system mass density (or specific volume). An intensive variable can always be calculated in terms of other intensive variables.

Is gas an independent variable?

We say that the pressure, p, is the dependent variable and that there are three independent variables; the amount of gas, n, the termperature, T, and the volume of gas, V. As the name implies dependent variables depend upon other quantities. On the other hand, independent variables have no such dependence.

Which variable pressure temperature or volume is kept constant?

Since pressure is kept constant, the only variable that is manipulated is temperature. This means that we can use Charles’s law in order to compare volume and temperature. Since volume and temperature are on opposite sides of the ideal gas law, they are directly proportional to one another.

How is a gas affected when pressure temperature or volume change?

The volume of a given gas sample is directly proportional to its absolute temperature at constant pressure (Charles’s law). The volume of a given amount of gas is inversely proportional to its pressure when temperature is held constant (Boyle’s law).

What volume does gas have at STP?

22.41 L/mol
So, the volume of an ideal gas is 22.41 L/mol at STP. This, 22.4 L, is probably the most remembered and least useful number in chemistry.

Which gas property is the independent variable?

The volume will serve as the independent variable, which is changed by the researcher. The pressure will be the dependent variable, whose response is measured.

When the pressure of a gas at constant temperature is doubled the volume of the gas is?

If the pressure on the piston is again doubled, the volume of gas decreases to one-fourth its original volume. FIGURE 9.8 Boyle’s Law: At constant temperature, the volume of a gas sample is inversely proportional to the pressure.

What variables are held constant?

A controlled variable is one which the researcher holds constant (controls) during an experiment.

Is pressure and temperature direct or inverse?

The pressure of a given amount of gas is directly proportional to its absolute temperature, provided that the volume does not change (Amontons’s law). The volume of a given gas sample is directly proportional to its absolute temperature at constant pressure (Charles’s law).

What happens when gas pressure increases?

Boyle found that when the pressure of gas at a constant temperature is increased, the volume of the gas decreases. this relationship between pressure and volume is called Boyle’s law. So, at constant temperature, the answer to your answer is: the volume decreases in the same ratio as the ratio of pressure increases.

What is the temperature of a gas at STP?

273.15 K
Since 1982, STP is defined as a temperature of 273.15 K (0 °C, 32 °F) and an absolute pressure of exactly 105 Pa (100 kPa, 1 bar).