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Chemistry
Natalee Hess
4 February, 23:21
FeCl3 + NaOH → Fe (OH) 3 + NaCl
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Nataly Olson
5 February, 01:32
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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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