A balanced chemical equation contains a large amount of information. What information is given in a balanced equation?

Short Answer

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A balanced chemical equation provides information on the reactants and products involved in a chemical reaction, their stoichiometry, the conservation of mass, and the physical states of the substances. It ensures the law of conservation of mass is maintained, with coefficients indicating the molar ratio of reactants to products and specifying the quantities of each substance participating in the reaction. This information allows chemists to understand chemical processes, predict reactant amounts required and products formed, and design appropriate experimental conditions for carrying out reactions.

Step by step solution

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1. Definition of a balanced chemical equation

A balanced chemical equation is a representation of a chemical reaction using the chemical formulas of the reactants and products, with coefficients in front of each compound to indicate the stoichiometry of the reaction. In other words, it ensures that the law of conservation of mass is maintained, meaning the number of each type of atom on the reactants side of the equation matches the number of each type of atom on the products side of the equation.
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2. Conservation of mass

A balanced equation indicates the conservation of mass during the chemical reaction. The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction. As a result, the number of each type of atom before the reaction must equal the number of each type of atom after the reaction.
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3. Reactants and products

In a balanced equation, the chemicals on the left side are the reactants, which are the substances that undergo the chemical reaction. The chemicals on the right side are the products, which are the substances that result from the reaction. The reactants and products are separated by an arrow, which typically points towards the products and represents the direction of the reaction.
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4. Coefficients

The coefficients in a balanced chemical equation specify the quantities of each substance that participates in the reaction. These coefficients are whole numbers and indicate the molar ratio of reactants to products. For example, a coefficient of 2 in front of a compound means that 2 moles of that compound are involved in the reaction. Stoichiometry allows us to determine the quantities of reactants needed to produce a desired amount of products and the amount of products formed from a given amount of reactants.
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5. Physical states

Balanced chemical equations may also include information about the physical states of the chemicals involved, such as solid (s), liquid (l), gas (g), or dissolved in an aqueous solution (aq). This additional information provides insight into the conditions required for the reaction to occur and the nature of the products formed. In summary, a balanced chemical equation provides crucial information about a chemical reaction, including the reactants and products involved, their stoichiometry, the conservation of mass, and information about the physical states of the substances. This information allows chemists to better understand chemical processes, predict the amounts of reactants required and products formed, and design appropriate experimental conditions for carrying out reactions.

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Most popular questions from this chapter

Maleic acid is an organic compound composed of \(41.39 \% \mathrm{C}\). \(3.47 \% \mathrm{H}\), and the rest oxygen. If \(0.129\) mole of maleic acid has a mass of \(15.0 \mathrm{~g}\), what are the empirical and molecular formulas of maleic acid?

You take \(1.00 \mathrm{~g}\) of an aspirin tablet (a compound consisting solely of carbon, hydrogen, and oxygen), burn it in air, and collect \(2.20 \mathrm{~g} \mathrm{CO}_{2}\) and \(0.400 \mathrm{~g} \mathrm{H}_{2} \mathrm{O}\). You know that the molar mass of aspirin is between 170 and \(190 \mathrm{~g} / \mathrm{mol}\). Reacting 1 mole of salicylic acid with 1 mole of acetic anhydride \(\left(\mathrm{C}_{4} \mathrm{H}_{6} \mathrm{O}_{3}\right)\) gives you 1 mole of aspirin and 1 mole of acetic acid \(\left(\mathrm{C}_{2} \mathrm{H}_{4} \mathrm{O}_{2}\right.\) ). Use this information to determine the molecular formula of salicylic acid.

Aspartame is an artificial sweetener that is 160 times sweeter than sucrose (table sugar) when dissolved in water. It is marketed as NutraSweet. The molecular formula of aspartame is \(\mathrm{C}_{14} \mathrm{H}_{18} \mathrm{~N}_{2} \mathrm{O}_{5}\) a. Calculate the molar mass of aspartame. b. What amount (moles) of molecules are present in \(10.0 \mathrm{~g}\) aspartame? c. Calculate the mass in grams of \(1.56\) mole of aspartame. d. What number of molecules are in \(5.0 \mathrm{mg}\) aspartame? e. What number of atoms of nitrogen are in \(1.2 \mathrm{~g}\) aspartame? f. What is the mass in grams of \(1.0 \times 10^{9}\) molecules of aspartame? g. What is the mass in grams of one molecule of aspartame?

A potential fuel for rockets is a combination of \(\mathrm{B}_{4} \mathrm{H}_{9}\) and \(\mathrm{O}_{2}\) The two react according to the following balanced equation: $$ 2 \mathrm{~B}_{4} \mathrm{H}_{9}(l)+12 \mathrm{O}_{2}(g) \longrightarrow 5 \mathrm{~B}_{2} \mathrm{O}_{3}(s)+9 \mathrm{H}_{2} \mathrm{O}(g) $$ If one tank in a rocket holds \(126 \mathrm{~g} \mathrm{~B}_{4} \mathrm{H}_{9}\) and another tank holds \(192 \mathrm{~g} \mathrm{O}_{2}\), what mass of water can be produced when the entire contents of each tank react together?

Arrange the following substances in order of increasing mass percent of nitrogen. a. NO b. \(\mathrm{N}_{2} \mathrm{O}\) c. \(\mathrm{NH}_{3}\) d. SNH

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