Multiple Choice
When the following chemical equation is balanced, what are the correct coefficients for Sb, O_2, and Sb_4O_6?__ Sb + __ O_2 → __ Sb_4O_6
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3. Chemical Reactions
Balancing Chemical Equations
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Which of the following chemical equations is NOT correctly balanced?
A
2 H_2 + O_2 \rightarrow 2 H_2O
B
C_3H_8 + 5 O_2 \rightarrow 3 CO_2 + 4 H_2O
C
Fe + O_2 \rightarrow Fe_2O_3
D
N_2 + 3 H_2 \rightarrow 2 NH_3
Verified step by step guidance1
Identify each chemical equation and write down the number of atoms of each element on both the reactant and product sides.
For the equation \$2\ H_2 + O_2 \rightarrow 2\ H_2O$, count hydrogen and oxygen atoms on both sides to verify balance.
For the equation \(C_3H_8 + 5\ O_2 \rightarrow 3\ CO_2 + 4\ H_2O\), count carbon, hydrogen, and oxygen atoms on both sides to check if they are equal.
For the equation \(Fe + O_2 \rightarrow Fe_2O_3\), count iron and oxygen atoms on both sides and check if the number of atoms matches; if not, adjust coefficients to balance.
For the equation \(N_2 + 3\ H_2 \rightarrow 2\ NH_3\), count nitrogen and hydrogen atoms on both sides to confirm the equation is balanced.
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