Determination of R: 14 Pre-lab The Gas Law Constant | Questions oratory, you sho

Question

Determination of R: 14 Pre-lab The Gas Law Constant | Questions oratory, you should be able to answer the der what conditions of temperature and pressure would you expect gases to obey the ideal gas equation? Before beginning this experiment in the lab following questions. 1. Un 2. Calculate the value of R in L-atm/mol-K by assuming that an ideal gas occupies 22.4 L/mol at STP. u o beae 4. Why does the vapor pressure of water contribute to the total pressure in the bottle? 5. What is the value of an error analysis? 6. Suggest reasons why real gases might deviate from the ideal gas law on the molecular level.

Explanation / Answer

Q1

at Low Pressure, and high Temeprature

since they particles are veyr far form each other, therefore, no interactions between them

Q2

PV = nRT

R = PV/(nT)

R = 1*22.4/273.15

R = 0.0820062 LAtm/molK

Q3

in order to favour and ensoure equal volume and pressure

Q4

according to dalton partial pressures are added

so

Ptotal = Pgas + Pvapor

Pgas = Ptotal - Pvapor

thereofre, we need to account for vapor pressure

Q5

most likely , incorrect measurment, Pressure calcualtion of real conditions apply

Q6

they might:

attract between each other

disperce between each other

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