Question
2KClO3-2KCl+3O2
If this reaction produced 35.2 g of KCl, how much O2 was produced (in grams)?
If this reaction produced 35.2 g of KCl, how much O2 was produced (in grams)?
Answers
Using the coefficients in the balanced equation lets you convert mols of mols of anything to anything in the equation.
mols KCl = grams/molar mass = approx 5 but that's an estimate.
5 mols KCl x (3 mols O2/2 mol KCl) = 5 x 3/2 = ? mols O2.
Then grams = mols o2 x molar mass O2.
mols KCl = grams/molar mass = approx 5 but that's an estimate.
5 mols KCl x (3 mols O2/2 mol KCl) = 5 x 3/2 = ? mols O2.
Then grams = mols o2 x molar mass O2.
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