2.6- BALANCED EQUATIONS, ATOM ECONOMIES, AND PERCENTAGE YIELDS Flashcards
1
Q
How is the atom economy of a reaction found?
A
found directly from the balanced equation
2
Q
equation for atom economy
A
% atom economy =
total mass of reactants
- 100
3
Q
What does the atom economy tell you?
A
in theory how many atoms must be wasted in reaction
4
Q
What does the yield of a reaction tell you?
A
about the practical efficiency of the process, how much is lost by:
practical process of obtaining a product and
as a result of reactions that do not go to completion
5
Q
equation for yield of chemical reaction
A
theoretical maximum no. of moles of product
* 100
or using mass
6
Q
When is it impossible to have 100% yield?
A
reversible reaction
7
Q
How can the yield of a reversible reaction be improved?
A
changing conditions
