Transcript Notes: Mole to Mole

Ch. 11 - Stoichiometry
Mole to Mole Conversions
The equation for a turkey
sandwich might look like:
2 turkey + 1 cheese
+ 2 bread 
1 turkey sandwich
 The
coefficents in the balanced
chemical equation show
RELATIVE numbers of moles of
each substance
 In other words, it is telling you
the RATIO of moles
 You can have more or less than
the values given but they are
still in the same proportion
We need these MOLE RATIOS!
 If
you know the actual number of
moles of one of the substances in
the balanced equation, you can
determine the number of moles of
the others substances too…using
the MOLE RATIO.
Practice Problem #1:
NH4NO3  N2O + 2H2O
a) You have 4.2 moles of NH4NO3 reacting,
how many moles of H2O are produced?
4.2 mol NH4NO3 x ___________ =
b)
How many moles of N2O are produced?
4.2 moles NH4NO3 x ___________ =
Practice Problem #2:
2HCl + Zn  ZnCl2 + H2
How many moles of HCl are needed to react
with 2.3 moles of Zn?
2.3 mol Zn x ___________ =
Practice Problem #3:
__ C6H12O6 + __ O2  __ CO2 + __ H2O
If 3.20 mol of C6H12O6 react, how many moles of
O2 react?
C6H12O6 + 6 O2  6 CO2 + 6 H2O
3.20 mol C6H12O6 x 6 mol CO2 = 19.2 mol CO2
1 mol C6H12O6