Question

Each step in the process below has a 60.0% yield CH4 + 4Cl2 > CCl4 +...

Each step in the process below has a 60.0% yield CH4 + 4Cl2 > CCl4 + 4HCl CCl4 + 2HF > CCl2F2 + 2HCl The CCl4 formed in the first step is used as a reactant in the second step. If 3.50 mol of CH4 reacts, what is the total amount of HCl produced? Assume that Cl2 and HF are present in excess.

Homework Answers

Answer #1

1) CH4 + 4 Cl2 ---> CCl4 + 4 HCl

2) CCl4 + 2 HF ----> CCl2F2 + 2 HCl

Given,

3.5 mol CH4

Step1: moles of HCL and CCl4 produced

From(1)

1 mol of CH4 can produce 4 mol HCl

3.5 mol CH4 can produce 4x3.5= 14 mol HCl

Thus actual moles of HCl produced= 14 x 60/100. ( 60 % yield)

=8.4 mol HCl

1 mol of CH4 can produce 1 mol CCl4

3.5 mol of CH4 can produce 3.5 mol of CCl4

Actual mol of CCl4 = 3.5 x 60/100 = 2.1 mol

From(2)

1 mol CCl4 can produce 2 mol of HCl

2.1 mol CCl4 can produce 2 x 2.1 = 4.2 mol HCl

Actual mol of HCl= 4.2 x 60/100 = 2.52

Step2: total mol of HCl produced

Total mol= 8.4 + 2.52 = 10.92 moles of HCl

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