When 3.22 moles of AL reacts with 4.96 moles of HBr, how many moles of H2 are formed?explain.
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Answer:
Explanation:
The balanced chemical equation represents the mole ratio in which the chemicals react.
Since 2 moles aluminuim are required for every 6 moles of hydrogen bromide, yet we only have 3.22 moles aluminium and 4.96 moles hydrogen bromide, it implies that
H
B
r
will get used up first and is hence the limiting reactant, while
A
l
is in excess.
So all
4.96
m
o
l
H
B
r
is used up and reacts with
4.96
3
=
1.653
m
o
l
A
l
to produce
4.96
2
=
2.48
m
o
l
H
2
.
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