Percentage Yield | GCSE Chemistry Practice
Percentage yield compares the amount of product you actually get with the maximum possible amount.
Calculate % yield if actual is 2g and theoretical is 10g.
What is Percentage Yield | Practice?
"The ratio of the actual amount of product obtained to the theoretical maximum amount."
Calculate the relative formula mass (Mr) of H2O. (H=1, O=16)
Calculate the mass of 0.25 moles of Calcium Carbonate (CaCO3). (Mr=100)
How many moles are in 36g of water? (Mr of H2O = 18)
Which formula is used to calculate the number of moles?
Process Efficiency
Percentage Yield = (Actual Yield / Theoretical Yield) x 100.
Yield is rarely 100% due to side reactions, lost product, or reversible reactions.
Theoretical yield is calculated using the balanced equation.
Industrial Link: High yields are vital in industry to reduce costs and minimise waste.
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