Multiple Choice
In the reaction: Li + F_2 → LiF, what is the coefficient of lithium fluoride (LiF) in the balanced chemical equation?
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3. Chemical Reactions
Balancing Chemical Equations
Multiple Choice
Which of the following is an important step when balancing a chemical equation?
A
Change the subscripts in chemical formulas to balance the equation.
B
Adjust the coefficients of compounds to ensure the same number of each atom on both sides of the equation.
C
Add or remove reactants or products to achieve balance.
D
Ignore the conservation of mass when balancing equations.
Verified step by step guidance1
Understand that balancing a chemical equation means making sure the number of atoms of each element is the same on both sides of the equation, reflecting the Law of Conservation of Mass.
Recognize that changing the subscripts in chemical formulas alters the substances themselves, which is not allowed when balancing equations.
Focus on adjusting the coefficients (the numbers placed before compounds or elements) to balance the atoms without changing the chemical identity of the substances.
Avoid adding or removing reactants or products arbitrarily, as the equation must represent the actual chemical reaction.
Remember that ignoring the conservation of mass is incorrect; balancing equations must always respect this fundamental principle.
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