Why is a percentage yield never 100%?

There are a few reasons why percentage yield will never be 100%. This could be because other, unexpected reactions occur which don't produce the desired product, not all of the reactants are used in the reaction, or perhaps when the product was removed from the reaction vessel it was not all collected.

AB

Related Chemistry GCSE answers

All answers ▸

Nitric acid reacts with magnesium and fizzing occurs. Write a word equation and a balanced chemical equation for this reaction.


Ethane-1,2-diol can be dissolved in water to act as an anti-freeze in car radiators. Explain why ethane-1,2-diol is very soluble in water. (2)


Please describe how temperature, concentration and the use of a catalyst affects rate of reaction.


What is an ionic compound and how do they form?