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Ch.3 - Chemical Reactions and Reaction Stoichiometry
Brown - Chemistry: The Central Science 14th Edition
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Tutti i libri di testoBrown 14th EditionCh.3 - Chemical Reactions and Reaction StoichiometryProblema 87c
Capitolo 3, Problema 87c

Write balanced chemical equations for (c) the combination reaction between nickel metal and chlorine gas.

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Identify the reactants: nickel metal (Ni) and chlorine gas (Cl_2).
Determine the product of the reaction: nickel chloride (NiCl_2), as nickel typically forms a +2 oxidation state.
Write the unbalanced chemical equation: Ni + Cl_2 \(\rightarrow\) NiCl_2.
Balance the equation by ensuring the number of atoms of each element is equal on both sides. Start by balancing the chlorine atoms.
Adjust the coefficients to balance the equation: Ni + Cl_2 \(\rightarrow\) NiCl_2 is already balanced.

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Combination Reaction

A combination reaction, also known as a synthesis reaction, occurs when two or more reactants combine to form a single product. In this type of reaction, elements or simpler compounds react to create a more complex compound. For example, when nickel metal reacts with chlorine gas, they combine to form nickel(II) chloride.
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Combined Gas Law

Balancing Chemical Equations

Balancing chemical equations is essential to ensure that the law of conservation of mass is upheld, meaning the number of atoms of each element must be the same on both sides of the equation. This involves adjusting coefficients in front of the reactants and products to achieve equal numbers of each type of atom. A balanced equation accurately represents the quantities of substances involved in the reaction.
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Balancing Chemical Equations

Chemical Symbols and Formulas

Chemical symbols and formulas are shorthand representations of elements and compounds. Each element is represented by a one- or two-letter symbol, while compounds are represented by formulas that indicate the types and numbers of atoms present. For instance, nickel is denoted as 'Ni' and chlorine as 'Cl', while the compound formed from their reaction is represented as NiCl2, indicating one nickel atom and two chlorine atoms.
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Lewis Dot Symbols
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