Identify the type of reaction below:Mg + 2 HCl --> MgCl2 + H2Group of answer choicesCombinationSingle displacementDecompositionDouble displacement
Question
Identify the type of reaction below:
Mg + 2 HCl --> MgCl2 + H2
Group of answer choices:
- Combination
- Single displacement
- Decomposition
- Double displacement
Solution
Step 1: Break Down the Problem
We need to identify the type of chemical reaction represented by the equation:
Step 2: Relevant Concepts
The types of chemical reactions include:
- Combination Reaction: Two or more substances combine to form a single compound.
- Single Displacement Reaction: One element displaces another in a compound.
- Decomposition Reaction: A single compound breaks down into two or more simpler products.
- Double Displacement Reaction: The ions of two compounds exchange places in an aqueous solution to form two new compounds.
Step 3: Analysis and Detail
In the given reaction:
- Magnesium (Mg) is a solid metal.
- Hydrochloric acid (HCl) is an acid that dissociates into H⁺ and Cl⁻ ions.
- Magnesium displaces hydrogen (H) from hydrochloric acid, leading to the formation of magnesium chloride (MgCl₂) and hydrogen gas (H₂).
- The products formed consist of one compound (MgCl₂) and a gas (H₂).
Step 4: Verify and Summarize
Since magnesium displaces hydrogen from HCl, this reaction fits the definition of a single displacement reaction. No new compounds are formed by replacing the partners in a double displacement manner.
Final Answer
The type of reaction is Single displacement.
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