Chermaistry Bummer?

Question

The production capacity for acrylonitrile (C3H3N) in the United States is over 2 million pounds per year. Acrylonitrile, the building block for polyacrylonitrile fibers and a variety of plastics, is produced from gaseous propylene, ammonia, and oxygen;




2C3H6(g)+2NH3(g)+3O2(g) --> 2C3H3N(g)+6H2O(g

A)
What mass of acrylonitrile can be produced from a mixture of 0.88kg of propylene, 1.55kg of ammonia, and 2.10kg of oxygen?

B)
What mass of water is produced?

C)
What mass of propylene is left over?

D)
What mass of ammonia is left over?

E)
What mass of oxygen is left over?

Answer 1

Lots of stoich here.

A) Convert each mass to mass of product to see which gives the lowest amount of product - that is what can actually be formed from all the reactants.

B) Using the same reactant that gave you the smallest amount of product, us stoich to see mas of water produced.

C) Work stoich backwards. Start with smallest mass of product answer and work stoich to see amount of propylene needed to make that mass of product.

D) Same as "C" but work stoich to ammonia.

E) Same as "C" but work stoich to O2.

(Either C, D, or E will be your limiting reactant. It is the reactant that gave you the smallest amount of product.)