Multiple Choice
Which of the following is the correctly balanced equation for the reaction of aluminum with hydroxide ions in a basic solution to form aluminate ions and hydrogen gas?
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3. Chemical Reactions
Balancing Chemical Equations
Multiple Choice
What is the balanced chemical equation for the reaction between iron(III) chloride (FeCl3) and sodium hydroxide (NaOH)?
A
FeCl3 + NaOH → Fe(OH)3 + NaCl
B
FeCl3 + 3NaOH → Fe(OH)3 + 3NaCl
C
FeCl3 + 2NaOH → Fe(OH)2 + 2NaCl
D
2FeCl3 + 3NaOH → 2Fe(OH)3 + 3NaCl
Verified step by step guidance1
Identify the reactants and products in the given chemical reaction: Iron(III) chloride (FeCl3) and sodium hydroxide (NaOH) are the reactants, while iron(III) hydroxide (Fe(OH)3) and sodium chloride (NaCl) are the products.
Write the unbalanced chemical equation: FeCl3 + NaOH → Fe(OH)3 + NaCl.
Balance the equation by ensuring the number of atoms of each element is the same on both sides. Start by balancing the iron (Fe) atoms: 1 Fe atom on both sides.
Next, balance the chlorine (Cl) atoms. There are 3 Cl atoms in FeCl3, so you need 3 NaCl on the product side: FeCl3 + NaOH → Fe(OH)3 + 3NaCl.
Finally, balance the sodium (Na) and hydroxide (OH) ions. Since there are 3 NaCl, you need 3 NaOH to provide 3 Na and 3 OH: FeCl3 + 3NaOH → Fe(OH)3 + 3NaCl. Verify that all elements are balanced.
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