Asked by Yams
What is the theoretic yield of CaO when you have 2.34 g of calcium which reacts with excess oxygen?
Here is formula2Ca(s) + O2(g) → 2CaO(s)
Here is formula2Ca(s) + O2(g) → 2CaO(s)
Answers
Answered by
DrBob222
2Ca(s) + O2(g) → 2CaO(s)
Here is a procedure that will work your stoichiometry problems.
Step 1. Write and balance the equation. You've done that.
Step 2. Convert what you have to mols. mols = g/atomic mass = 2.34/40.08=? Estimated 0.06 BUT you should use the correct value.
Step 3. Using the coefficients in the balanced equation, convert mols of what you have to mols of what you want (one of the products)
0.06 mols Ca x (2 mols CaO/2 mols Ca) = approx 0.06 mols CaO
Step 4. Convert step 3 to grams. g = mols x molar mass = about 0.06 x approx 56 = ? This is the theoretical yield in grams
Often problems will ask for a percent yield. In that case just add another step and %yield = (actual yield/theoretical yield)*100 = ?
Here is a procedure that will work your stoichiometry problems.
Step 1. Write and balance the equation. You've done that.
Step 2. Convert what you have to mols. mols = g/atomic mass = 2.34/40.08=? Estimated 0.06 BUT you should use the correct value.
Step 3. Using the coefficients in the balanced equation, convert mols of what you have to mols of what you want (one of the products)
0.06 mols Ca x (2 mols CaO/2 mols Ca) = approx 0.06 mols CaO
Step 4. Convert step 3 to grams. g = mols x molar mass = about 0.06 x approx 56 = ? This is the theoretical yield in grams
Often problems will ask for a percent yield. In that case just add another step and %yield = (actual yield/theoretical yield)*100 = ?
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.