Grade 10 · Science · Chemistry

10th grade Theoretical and percent yield worksheet

6 printable versionsOn Level10 questions · answer keyFree · no account

Level: Building Confidence · On Level · Challenge Me

When it’s done, scan the sheet with your phone and PencilGo marks it and picks the next one. Create a free account

Version

Theoretical and percent yield

Grade 10 Science Worksheet

NameDate

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 25.2 g of baking soda, to 0.01 g, Bo?
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?
4.
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?
- 90%, from 7.92 ÷ 8.80 × 100
- 47.1%, from 7.92 ÷ 16.80 × 100
- 111.1%, from 8.80 ÷ 7.92 × 100
5.
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?
- 95%, from 4.18 ÷ 4.40 × 100
- 49.8%, from 4.18 ÷ 8.40 × 100
- 105.3%, from 4.40 ÷ 4.18 × 100
6.
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
7.
The theoretical yield is 8.80 g and the percent yield is 95%. What is the actual yield, Pia?
- 9.26 g, from 8.80 ÷ 0.95
- 0.44 g, the 5% that was lost
- 8.36 g
8.
The theoretical yield is 13.20 g and the percent yield is 75%. What is the actual yield, Ren?
- 17.60 g, from 13.20 ÷ 0.75
- 3.30 g, the 25% that was lost
- 9.90 g
9.
A group reports 9.70 g of product when 8.80 g was the theoretical yield. What is the likely reason, Tala?
- The reaction made extra product beyond the equation
- The product is still wet or impure
- Some atoms were created during the reaction
10.
Which result should a careful lab group question first, Zee?
- A 92% yield of crystals
- An 85% yield of crystals
- A 108% yield of crystals

10th grade Theoretical and percent yield worksheet – printable — Print: 1 2 3 4 5 6

About this worksheet

Theoretical and percent yield. Every version has 10 questions, and the answer key prints on the second page.

What your child will learn

I can tell the theoretical yield (worked out) from the actual yield (weighed).
I can find percent yield = actual ÷ theoretical × 100, and an actual yield from a percent.
I can name reasons a yield falls short, and say why a yield over 100% points to a wet or impure product.

Standard: HS-PS1-7

Words to know

theoretical yield: The product mass worked out from the balanced equation

actual yield: The product mass really collected and weighed

percent yield: Actual ÷ theoretical × 100

Common mistakes

Your child divided the wrong way. Percent yield = actual ÷ theoretical × 100, so a real yield is usually under 100%.

Your child used the molar masses the wrong way round. Divide by the reactant's molar mass, then multiply by the product's.

Your child divided by the reactant's mass. Percent yield compares the product made with the product expected.

Questions parents ask

What is the most common mistake with theoretical and percent yield?

Your child divided the wrong way. Percent yield = actual ÷ theoretical × 100, so a real yield is usually under 100%.

Are these 10th grade science worksheets free to print?

Yes. All 6 printable versions at each level are free to print, with the answer key, and no account is needed.

More chemistry

See all Chemistry

Every sheet you scan goes into your child’s record: dated, marked and ready for the year-end portfolio. Homeschool records