Hydrobromic acid dissolves solid iron according to the balanced equation: Fe(s) + 2 HBr(aq) → FeBr2(aq) + H2(g) How many grams of H2 would be produced by dissolving 6.31g of iron?


0.342

0.228

0.114

4.38

1 Answer
May 12, 2018

0.226g

Explanation:

Using "mass"=M_rxx"moles"

"moles of " Fe=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=0.113xx2

=0.226"g"