Answered

In an experiment 150.0 grams of AsF3 were reacted with 180.0 g of CCl4 to produce AsCl3 and CCl2F2. The theoretical yield of CCl2F2, in grams, is


a)141.5 grams

b)206.2 grams

c)137.5 grams

d)104.4 grams

e)152.6 grams

Verified Answer :

Yipes

AsF₃:

M=132g/mol
m=150g

n = m/M = 150g/132g/mol = 1,14mol

CCl₄:

M=154g/mol
m=180g

n = m/M = 180g/154g/mol = 1,17mol

2AsF₃           +          3CCl₄ ⇒ 2AsCl₃ +  3CCl₂F₂
2mol              :          3mol                      :   3mol
1,14mol        :          1,17mol                 :   1,17mol
                                  limiting reagent
0,78mol will react     

CCl₂F₂:

n = 1,17mol
M = 121g/mol

m = nM = 1,17mol * 121g/mol = 141,57g

Answer a

Related Questions