Multiple Choice
Which of the following is an important step when balancing a chemical equation?
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3. Chemical Reactions
Balancing Chemical Equations
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Which of the following is NOT provided by the coefficients in a balanced chemical equation?
A
The identities of the substances involved
B
The ratio in which substances react and are produced
C
The physical states of the reactants and products
D
The relative number of moles of reactants and products
Verified step by step guidance1
Understand that the coefficients in a balanced chemical equation represent the relative number of moles of each reactant and product involved in the reaction.
Recognize that these coefficients provide the mole ratio, which tells us the proportion in which substances react and are produced.
Note that the coefficients do not indicate the physical states (solid, liquid, gas, aqueous) of the substances; physical states are usually shown separately as symbols like (s), (l), (g), or (aq).
Realize that the coefficients also do not specify the identities of the substances themselves; the chemical formulas do that.
Conclude that the physical states of reactants and products are NOT provided by the coefficients in a balanced chemical equation.
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