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1 March, 13:23

FeCl3 + NaOH → Fe (OH) 3 + NaCl

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  1. 1 March, 13:52
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    FeCl₃ + 3NaOH → Fe (OH) ₃ + 3NaCl

    Explanation:

    You are given a skeleton equation, or unbalanced equation.

    FeCl₃ + NaOH → Fe (OH) ₃ + NaCl

    Count the number of atoms on each side. If there is 1 atom, the subscript is not written. If the subscript to the right of a bracket, it belongs to each element in the bracket.

    Reactants → Products

    Fe 1 Fe 1

    Cl 3 Cl 1 Not balanced

    Na 1 Na 1

    O 1 O 3 Not balanced

    H 1 H 3 Not balanced

    The number of each element must be the same in the reactants and products. We can see that Cl (chlorine), O (oxygen) and H (hydrogen) have different numbers.

    Write in coefficients in front of formulas (separated by + sign). Coefficients multiply each subscript (or "1" if not written) in the formula. Recount the atoms until you have equal reactant and product atom numbers.

    I see that I need more chlorine in my products. Multiply the formula that has "Cl" by 3.

    FeCl₃ + NaOH → Fe (OH) ₃ + 3NaCl

    Reactants → Products

    Fe 1 Fe 1

    Cl 3 Cl 3 Cl is balanced now.

    Na 1 Na 3 Not balanced

    O 1 O 3 Not balanced

    H 1 H 3 Not balanced

    Fix the "Na" now. Multiply the formula with "Na" on the left by 3.

    FeCl₃ + 3NaOH → Fe (OH) ₃ + 3NaCl

    Reactants → Products

    Fe 1 Fe 1

    Cl 3 Cl 3

    Na 3 Na 3

    O 3 O 3

    H 3 H 3

    Each side has the same number of each element. Therefore, this is balanced now.

    Balanced formula:

    FeCl₃ + 3NaOH → Fe (OH) ₃ + 3NaCl
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