What’s on the Percentage Yield poster
The rule, 3 worked examples, and the mistake everyone makes.
- Percentage yield is actual yield divided by theoretical yield.
- % yield = (actual ÷ theoretical) × 100
- Theoretical 8.0 g, actual 6.4 g = 80%
- Why below 100% = Losses, side reactions, reversibility
- Above 100% = Product is impure or wet
- Common mistake: Calculating from the reactant in excess → Using the limiting reactant
Percentage yield above 100% always indicates impurity — most often incomplete drying.
Questions about the Percentage Yield poster
- What’s on the Percentage Yield poster?
- The rule, 3 worked examples, and the mistake everyone makes. Percentage yield is actual yield divided by theoretical yield.; % yield = (actual ÷ theoretical) × 100; Theoretical 8.0 g, actual 6.4 g = 80%; Why below 100% = Losses, side reactions, reversibility; Above 100% = Product is impure or wet; Common mistake: Calculating from the reactant in excess → Using the limiting reactant. Percentage yield above 100% always indicates impurity — most often incomplete drying.
- Who is the Percentage Yield poster for?
- Percentage Yield belongs to the Chemistry section rather than to a school year, because physical science is not something one grade owns. Anyone learning calculations can pin it up — a beginner, a student mid-course, or someone revising years later.
- When should you use the Percentage Yield poster?
- Theoretical yield comes from the limiting reactant. Always identify that first. A wall chart earns its place by being glanceable from where the work is happening, so Percentage Yield belongs on the wall where that physical science work actually happens, within glancing distance, rather than filed away.
- What other posters go with Percentage Yield?
- Limiting Reactant, Atom Economy and Formula Summary sit alongside Percentage Yield in the Chemistry section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Limiting ReactantAtom EconomyFormula Summary
- Is the Percentage Yield poster free to download and print?
- Yes. Percentage Yield downloads as a free PDF with no account, no email and no watermark, like everything else in the Chemistry section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
- What size does the Percentage Yield poster print at?
- Percentage Yield is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Percentage Yield loses nothing.Printing guide
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