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July 5, 2015

Homework Help: chemistry

Posted by Michael on Wednesday, March 31, 2010 at 7:35pm.

1. Chlorobenzene, C6H5Cl, is used in the production of chemicals such as aspirin
and dyes. One way that chlorobenzene is prepared is by reacting benzene, C6H6,
with chlorine gas according to the following BALANCED equation.
C6H6 (l) + Cl2 (g) nC6H5Cl (s) + HCl (g)

a. What is the theoretical yield if 45.6 g of benzene react?

b. If the actual yield is 63.7 g of chlorobenzene, calculate the percent yield.

2. When carbon disulfide burns in the presence of oxygen, sulfur dioxide and
carbon dioxide are produced according to the following equation.
CS2 (l) + 3 O2 (g) nCO2 (g) + 2 SO2 (g)

a. What is the percent yield of sulfur dioxide if the burning of 25.0 g of
carbon disulfide produces 40.5 g of sulfur dioxide?

b. What is the percent yield of carbon dioxide if 2.5 mol of oxygen react and
32.4 g of carbon dioxide are produced?

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