Theoretical and percent yield
Grade 10 Science Worksheet
Circle the best answer, or write your answer on the line.
Baking soda (84.01 g/mol) gives CO₂ (44.01 g/mol) 1 : 1 with vinegar. What is the theoretical yield of CO₂ from 50.41 g of baking soda, to 0.01 g, Esme?
Baking soda (84.01 g/mol) gives CO₂ (44.01 g/mol) 1 : 1 with vinegar. What is the theoretical yield of CO₂ from 12.6 g of baking soda, to 0.01 g, Jun?
From 16.80 g of baking soda, the theoretical CO₂ is 8.80 g, and 7.92 g is collected. What is the percent yield, Kira?
- 47.1%, from 7.92 ÷ 16.80 × 100
- 111.1%, from 8.80 ÷ 7.92 × 100
- 90%, from 7.92 ÷ 8.80 × 100
From 8.40 g of baking soda, the theoretical CO₂ is 4.40 g, and 4.18 g is collected. What is the percent yield, Luz?
- 49.8%, from 4.18 ÷ 8.40 × 100
- 95%, from 4.18 ÷ 4.40 × 100
- 105.3%, from 4.40 ÷ 4.18 × 100
From 21.00 g of baking soda, the theoretical CO₂ is 11.00 g, and 9.35 g is collected. What is the percent yield, Milo?
- 117.6%, from 11.00 ÷ 9.35 × 100
- 85%, from 9.35 ÷ 11.00 × 100
- 44.5%, from 9.35 ÷ 21.00 × 100
The theoretical yield is 22.00 g and the percent yield is 80%. What is the actual yield, Noah?
- 27.50 g, from 22.00 ÷ 0.80
- 17.60 g
- 80 g
The theoretical yield is 13.20 g and the percent yield is 75%. What is the actual yield, Ren?
- 9.90 g
- 17.60 g, from 13.20 ÷ 0.75
- 3.30 g, the 25% that was lost
A group reports 9.70 g of product when 8.80 g was the theoretical yield. What is the likely reason, Tala?
- The product is still wet or impure
- Some atoms were created during the reaction
- The reaction made extra product beyond the equation
Which result should a careful lab group question first, Zee?
- An 85% yield of crystals
- A 92% yield of crystals
- A 108% yield of crystals
A product is weighed wet, giving a 115% yield. What should the group do, Ari?
- Dry it fully and weigh it again
- Report 115% as a strong result
- Add the extra 15% to the theoretical yield