Question 8 (1 point) Use coefficients to balance the following reaction:
H2CO3 + Fe → Fe2(CO3)3 + H2
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The balanced equation

3H₂CO₃ + 2Fe → Fe₂(CO₃)₃ + 3H₂

Further explanation

Given

Reaction

H₂CO₃ + Fe → Fe₂(CO₃)₃ + H₂

Required

Coefficient of the reaction

Solution

Give a coefficient(the most complex = 1)

aH₂CO₃ + bFe → Fe₂(CO₃)₃ + cH₂

Make an equation

Prioritize balancing the elements that form the most complex compounds

Fe, left = b, right = 2⇒b=2

C, left = a, right = 3⇒a=3

H, left = 2a, right = 2c⇒2a=2c⇒2.3=2c⇒6=2c⇒c=3

The equation becomes :

3H₂CO₃ + 2Fe → Fe₂(CO₃)₃ + 3H₂

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