Answer 4.3.1: Writing a balanced reaction

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 propylene 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 209 mol/s, what is the extent of reaction? (Give its numerical value and its units.)

Explanation:

The final stoichiometric equation, then, is:

C3H8 + HCl -> C3H7Cl + H2

Look at this example to see what we mean and how you should do yours:

CH3CH2OH + HBr -> H2O + CH3CH2Br

You should write down the following number on a piece of paper because you'll need it when you're done figuring out all the steps that can be done on the other web page:

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