Step-by-step explanation:
Answer and Explanation: 1
The first step to solve problems in stoichiometry is to establish the balanced chemical equation for the reaction as shown.
2
A
l
+
6
H
C
l
→
2
A
l
C
l
3
+
3
H
2
We are asked to determine the mass of HCl that completely reacts with the given amount of aluminum. To solve this, we need the following information on the molar mass of the reactants:
Al MW = 26.98 g/mol
HCl MW = 36.46 g/mol
Thus, converting the given amount of Al to grams of HCl, we get.
87.7
g
A
l
×
1
m
o
l
A
l
25.98
g
×
6
m
o
l
H
C
l
2
m
o
l
A
l
×
36.46
g
1
m
o
l
H
C
l
=
369
g
H
C
l