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What type of reaction is represented by the following equation: CoCl₂(aq) + 2NaOH(aq) → Co(OH)₂(s) + 2NACI(aq)

a. single-displacement reaction
b. double-displacement reaction
c. combustion reaction
d. synthesis or combination reaction
e. decomposition reaction

User Kasual
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1 Answer

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Final answer:

The reaction CoCl₂(aq) + 2NaOH(aq) → Co(OH)₂(s) + 2NaCI(aq) is a double-displacement reaction, where the ions in the reactants exchange partners to form new compounds.

The correct answer is option b. double-displacement reaction

Step-by-step explanation:

The reaction represented by the equation CoCl₂(aq) + 2NaOH(aq) → Co(OH)₂(s) + 2NaCI(aq) is a double-displacement reaction. In this type of reaction, the cations and anions of two different compounds switch places, forming two new compounds. The solid Co(OH)₂ which forms in this reaction is a precipitate, indicating that a chemical reaction has occurred. This is a characteristic of most double-displacement reactions.

In comparison, a single-displacement reaction involves one element being replaced by another in a compound. A combustion reaction typically involves a hydrocarbon reacting with oxygen to produce carbon dioxide and water. A synthesis or combination reaction occurs when two or more reactants combine to form a single product. Lastly, a decomposition reaction involves a single compound breaking down into two or more products.

User Jauco
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