Answer 4.3.1: Why we need extents of reaction equations

Problem:

The reaction between propane and hydrogen chloride to form propyl chloride and hydrogen is carried out in a continuous reactor. The product stream is analyzed and found to contain 27.45 mole% C3H7Cl, 27.45 mole % H2 and 14.6% HCl. The feed to the reactor contains only propane and hydrogen chloride. Calculate the fractional conversion of the limiting reactant and the percentage by which the other reactant is in excess. If the molar flow rate of the feed stream is 290 mol/s, what is the extent of reaction? (Give its numerical value and its units.)

Explanation:

We've set up your table below so you can enter in the equations you think will be needed. We've also put the answer for the top one in the table so you can see how to type it in. We did this because we can only check your answer if you have the exact answer that we have. So, don't use any spaces and don't use any subscripts. We've also chosen to us x instead of ξ since there isn't an easy way for you to type that into the equations. Go ahead and fill in your equations...

If you don't have a flowsheet yet, you might want to go do that first. You also need to balance your equation first if you haven't.

overall equation: in - out + generation - consumption = 0
C3H8 balance: F1,C3H8-F2,C3H8-x=0
HCl balance:
C3H7Cl balance:
H2 balance:



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