Answer:
a)
b) The apparent molecular weight is
c)
d)
Explanation:
a)
Let's take a calculation basis of 100g. This can be seen just as analyze a sample of the gas of 100g. A sample of 100g will have the composition: 25g CO2, 10g CO and 65 g O2 because the given analysis on mass basis. We are going to pass that mass to its respective moles amount:
The total amount of moles in the 100 grams is: moles.
So, the molar fraction can be obtained dividing the moles amount of each compound by the total moles amount:
b) The apparent molecular weight can be obtained with the data we have for 100 g sample, because now we know that 2.9563 gas moles are in 100 g, so:
c) For an ideal gas the partial pressure of the 'i' compound is defined as:
where is the molar fraction and P is the total pressure, so:
d)For this volume calculation, we are going to use the ideal gas law:
where we know the pressure, the temperature and can calculate the number of moles.
Calculate the number of moles:
Calculate the temperature in Rankine:
The value for R is:
So, from the ideal gas law,