a. Identify the limiting reagent when 15.0 g of H2 reacts with 48.0 g of O2 to produce water.
b. What is the mass of water produced?
Solution:
We are given:
(
)
(
)
Reaction equation:
Amount of substance of
Amount of substance of
:
(
)
( )
( )
(
)
( )
( )
:
According to the reaction equation:
(
(
Obviously, oxygen
)
)
is the limiting reagent. Only
of
are required to react with
According to the reaction equation:
(
(
)
)
Thus:
(
)
(
)
(
)
Answer:
a.
b.
References:
1. http://en.wikipedia.org/wiki/Molecular_mass
(
)
of