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3 years ago

Can some please help me?

Chemistry

1 answer:

choli [55]3 years ago

6 0

1. The mole ratio of H2SO4 and H2O in the equation = 3:3

2. The mole ratio of Mg and Mn in the equation = 3:2

<h3>Further explanation</h3>

Given

Reaction

1. Fe2O3 + H2SO4 → Fe2(SO4)3 + H2O

2. Mg + Mn2O3 → MgO + Mn.

Required

Balanced equation

Solution

1. Fe₂O₃ + H₂SO₄ → Fe₂(SO₄)₃ + H₂O

Give a coefficient

aFe₂O₃ + bH₂SO₄ → Fe₂(SO₄)₃ + cH₂O

Make an equation

Fe, left = 2a, right=2⇒2a=2⇒a=1

S, left=b, right=3⇒b=3

H, left = 2b, right = 2c⇒2b=2c⇒2.3=2c⇒c=3

The equation becomes :

2. Mg + Mn₂O₃ → MgO + Mn.

Give a coefficient

aMg + Mn₂O₃ → bMgO + cMn.

Make an equation

Mn, left=2, right=c⇒c=2

O₂, left=3, right=b⇒b=3

Mg, left = a, right=b⇒a=b⇒a=3

The equation becomes :

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