Multiple Choice
Which of the following is the balanced net ionic equation for the reaction between HClO3(aq) and NaOH(aq)?
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3. Chemical Reactions
Balancing Chemical Equations
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What are the correct coefficients to balance the chemical equation: ____ Zn + ____ CuSO₄ → ____ ZnSO₄ + ____ Cu?
A
1, 1, 1, 1
B
2, 1, 2, 1
C
2, 2, 2, 2
D
1, 2, 1, 2
Verified step by step guidance1
Identify the reactants and products in the chemical equation: Zn (zinc) and CuSO₄ (copper(II) sulfate) are the reactants, while ZnSO₄ (zinc sulfate) and Cu (copper) are the products.
Write the unbalanced chemical equation: Zn + CuSO₄ → ZnSO₄ + Cu.
Count the number of each type of atom on both sides of the equation. Initially, you have 1 Zn, 1 Cu, 1 S, and 4 O atoms on both sides.
Since the number of each type of atom is already equal on both sides, the equation is balanced as written. Therefore, the coefficients are all 1: Zn + CuSO₄ → ZnSO₄ + Cu.
Verify the balance by ensuring that the number of atoms for each element is the same on both sides of the equation: 1 Zn, 1 Cu, 1 S, and 4 O atoms.
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