CCl4 + SbF3 = CCl2F2 + SbCl3
How many grams of CCl4 are needed to react with 5.0 mol SbF3?
Solution:
Balanced chemical equation:
3CCl4 + 2SbF3 → 3CCl2F2 + 2SbCl3
According to stoichiometry:
3 mol of CCl4 react with 2 mol of SbF3
X mol of CCl4 react with 5.0 mol of SbF3
Thus,
Moles of CCl4 = (5.0 mol SbF3) × (3 mol CCl4 / 2 mol SbF3) = 7.5 mol CCl4
The molar mass of CCl4 is 153.82 g/mol
Therefore,
Mass CCl4 = (7.5 mol CCl4) × (153.82 g CCl4 / 1 mol CCl4) = 1153.65 g CCl4
Mass CCl4 = 1153.65 g
Answer: 1153.65 grams of CCl4 are needed
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