If anyone helps with ANY of the questions it would be great, thanks! 1) At const

Question

If anyone helps with ANY of the questions it would be great, thanks!

1) At constant temperature, if n represents the moles of gas present, what would be the expected relationship between pressure (P) and the number of moles of gas (n). (Hint: Assume that Avogadro’s hypothesis that “equal volumes of gases, at the same temperature and pressure, contain equal numbers of molecules” is true.)

2) Based on the relationship between P, T, n and V, state a combined gas law connecting all the four variables using a new proportionality constant, K. Justify your answer

3) Identify the three gas laws covered in this experiment. Describe the relationship observed in each law

4) As you placed the apparatus in the warm water bath, you should have noticed the volume of air in the syringe increased. Explain what has happened to the gas. What variable should have remained constant?

Explanation / Answer

1) from combined ideal gas law equation

PV = nRT

Where

n = moles of gas

T= temperature

P = Pressure

V= volume

R = gas constant

If temperature and volume of gases are equal then

PV = nRT

Pressure = n RT /V

RT/V are constant

So Pressure is directly proportional to moles

2) the ratio between pressure-volume and moles-temperature of ideal gas is constant

PV /nT = constant = K = gas law constant

For one mole gas

PV/T = constant

3) from boyel's law

Pressure is inversely proportional to volume of gas

PV= constant = K1

From Charle's law

Volume of an ideal gas is directly proportional to temperature of gas

V/ T = constant = K2

Gay- Lussac's law:

The pressure of gas is directly proportional temperature

P / T = constant = K3

4) the volume of gas is directly proportional to temperature. When we heat water bath the air inside the syringe get heated and molecules move far apart from each other leading to increase in volume of gas. On heating the syringe the air molecules move faster and hit the walls fo syringe harder and more often causing its expansion.

The other variable pressure and moles of gas should remain constant

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.