Balance the following equations: b. WCl6(𝑠)+Na2S(𝑠)⟶WS2(𝑠)+NaCl(𝑠)+S(𝑠)

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Identify the reactants and products in the equation. The reactants are WCl6 (solid tungsten(VI) chloride) and Na2S (solid sodium sulfide). The products are WS2 (solid tungsten disulfide), NaCl (solid sodium chloride), and S (solid sulfur).

Write the unbalanced chemical equation: WCl6(s) + Na2S(s) ⟶ WS2(s) + NaCl(s) + S(s).

Balance the equation by adjusting the coefficients to ensure that the number of atoms for each element is the same on both sides of the equation. Start by balancing the atoms of elements that appear in only one reactant and one product.

Check the balance of the equation by counting the atoms of each element on both sides of the equation to ensure they are equal.

Adjust the coefficients if necessary until the equation is balanced, ensuring that the smallest whole number coefficients are used.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Balancing Chemical Equations

Balancing chemical equations involves ensuring that the number of atoms for each element is the same on both the reactant and product sides. This is based on the law of conservation of mass, which states that matter cannot be created or destroyed in a chemical reaction. Each side of the equation must have equal numbers of each type of atom, which often requires adjusting coefficients in front of the chemical formulas.

Stoichiometry

Stoichiometry is the quantitative relationship between reactants and products in a chemical reaction. It allows chemists to predict the amounts of substances consumed and produced in a given reaction. Understanding stoichiometry is essential for balancing equations, as it provides the ratios needed to ensure that the equation adheres to the conservation of mass.

State Symbols in Chemical Reactions

State symbols indicate the physical state of the reactants and products in a chemical equation. Common symbols include (s) for solid, (l) for liquid, (g) for gas, and (aq) for aqueous solutions. These symbols provide important information about the conditions of the reaction and can influence the reaction's behavior and the methods used for balancing the equation.

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