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:

We're going to give you each species with a blank beneath it. We'd like you to put the correct numbers beneath each one to represent the stoichiometric coefficients. Reactants should be negative numbers in this notation while the products should be positive numbers.

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

CH3CH2OH + HBr -> H2O + CH3CH2Br

H2O CH3CH2OH HBr CH3CH2Br
1 -1 -1 1

Now you try to do the same on yours. We'll give you the chemical species and you fill in the stoichiometric coefficients below them in the table:

HCl H2 C3H7Cl C3H8







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