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Anni [7]
3 years ago
15

Fe + H2SO4 --> Fe2(SO4)3 + H2

Mathematics
1 answer:
DENIUS [597]3 years ago
4 0

I assume you have to balance the reaction?

<em>a</em> Fe + <em>b</em> H₂SO₄   →   <em>c</em> Fe₂(SO₄)₃ + <em>d</em> H₂

Count the number of times an element occurs on either side of the reaction. These numbers must be equal.

Fe: <em>a</em> = 2<em>c</em>

H: 2<em>b</em> = <em>d</em>

S: <em>b</em> = 3<em>c</em>

O: 4<em>b</em> = 12<em>c</em>

Two of these equations depend on <em>c</em>, so we can treat it as a free variable. Let <em>c</em> = 1. Then <em>a</em> = 2 (Fe) and <em>b</em> = 3 (S), from which it follows that <em>d</em> = 6 (H). So the balanced reaction is

2 Fe + 3 H₂SO₄   →   1 Fe₂(SO₄)₃ + 6 H₂

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