Freon, a very useful refrigerant, is produced in the following reaction: 3CCl4 (g) + 2SbF3 (s) → 3CCl2F2 (g) + 2 SbCl3 (s)
If a chemist wants to make 3.0 x 106 moles of Freon using excess carbon tetrachloride, how many moles of antimony trifluoride will the chemist need?

The chemistry will need 2*10⁶ moles of antimony trifluoride.

Explanation:

The balanced reaction is:

3 CCl₄ (g) + 2 SbF₃ (s) → 3 CCl₂F₂(g) + 2 SbCl₃ (s)

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of each compound participate in the reaction:

You can apply the following rule of three: if by reaction stoichiometry 3 moles of freon are produced by 2 moles of antimony trifluoride, 3*10⁶ moles of Freon are produced from how many moles of antimony trifluoride?

moles of antimony trifluoride= 2*10⁶

The chemistry will need 2*10⁶ moles of antimony trifluoride.

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