What mass of H2 would be produced by the complete reaction of the iron bar.

Question

Hydrobromic acid dissolves solid iron according to the following reaction:
Fe(s)+2HBr(aq)→FeBr2(aq)+H2(g)

Answer 1

Answer:
0.226g
Explanation:
Using
mass
=
M
r
×
moles
moles of
F
e
=
6.31
55.8

=
0.113
mol
From the equation, one mole of iron produces one mole of hydrogen gas.
moles of
H
2
=
0.113
mol
mass
H
2
=
0.113
×
2
=
0.226
g