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lutik1710 [3]
3 years ago
6

How many moles of UF6 would have to be decomposed to provide enough fluorine to prepare 8.99 mol of CF4? (Assume sufficient carb

on is available).
Chemistry
1 answer:
Basile [38]3 years ago
7 0

Answer:

5.99 moles of UF_6

Explanation:

In this case, we can start with the <u>decomposition</u> of UF_6, so:

UF_6~->~U~+~3F_2 <u>(Reaction 1)</u>

The F_2 can react with carbon to produce CF_4:

CF_4~+~2F_2~->~CF_4 <u>(Reaction 2)</u>

If we 8.99 mol of CF_4, we can calculate the moles of F_2 that we need. In reaction 2 we have a <u>molar ratio</u> of 1:2 (2 moles of F_2 will produce 1 mol of CF_4):

8.99~mol~CF_4\frac{2~mol~F_2}{1~mol~CF_4}~=~17.98~mol~F_2

With this value and using the <u>molar ratio</u> in reaction 1 (3 moles of F_2 are producing by each mol of UF_6), so:

17.98~mol~F_2\frac{1~mol~UF_6}{3~mol~F_2}~=~5.99~mol~UF_6

So, we will need 5.99 moles of UF_6 to produce 8.99 mol of CF_4.

I hope it helps!

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