3.1.2.5 Balanced equations and associated calculations Flashcards
1
Q
What is atom economy?
A
How efficiently atoms in a reaction are used in a chemical reaction. THE ONLY example of where coefficients and stoichiometry are accounted for
2
Q
What is the formula for atom economy?
A
%atom economy = Mr of desired product/Sum of Mr of all reactants *100
3
Q
What is percentage yield?
A
A measure of how much product you get compared to how much you expect to get.
4
Q
Why is % yield never 100%?
A
- Loss of substance by mechanical transfer
- Loss during separation techniques e.g. filtration, separating funnel
- Side reactions occur
- Reaction does not reach completion
5
Q
What is the formula for % yield?
A
% yield = actual yield obtained/ theoretical yield expected *100
6
Q
A
