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Answer :
To determine the type of chemical reaction illustrated by the equation:
[tex]\[ \text{Sr}(s) + \text{H}_2\text{O}(l) \rightarrow \text{Sr(OH)}_2(aq) + \text{H}_2(g) \][/tex]
let's look at the characteristics of each reaction type:
1. Combination Reaction: This is when two or more substances combine to form a single product. The reaction above does not fit this because it produces more than one product.
2. Decomposition Reaction: In this type of reaction, a single compound breaks down into two or more products. The reaction above starts with two reactants, not one, so it's not a decomposition reaction.
3. Single Replacement Reaction: This type involves one element replacing another element in a compound, resulting in a new element and a new compound. Here, strontium (Sr) replaces one of the hydrogen atoms in water (H₂O), resulting in the formation of strontium hydroxide (Sr(OH)₂) and hydrogen gas (H₂). This matches the description of a single replacement reaction.
4. Double Replacement Reaction: This occurs when the ions of two compounds exchange places in an aqueous solution to form two new compounds. The equation above does not fit this type because an elemental metal (Sr) reacts with a compound (H₂O), rather than two ionic compounds exchanging ions.
5. Neutralization Reaction: This is a specific type of double replacement reaction that occurs between an acid and a base to produce a salt and water. The given reaction doesn't involve an acid and a base.
Considering the above definitions and the nature of the reaction where strontium replaces hydrogen in water, the correct classification for the given reaction is a single replacement reaction.
[tex]\[ \text{Sr}(s) + \text{H}_2\text{O}(l) \rightarrow \text{Sr(OH)}_2(aq) + \text{H}_2(g) \][/tex]
let's look at the characteristics of each reaction type:
1. Combination Reaction: This is when two or more substances combine to form a single product. The reaction above does not fit this because it produces more than one product.
2. Decomposition Reaction: In this type of reaction, a single compound breaks down into two or more products. The reaction above starts with two reactants, not one, so it's not a decomposition reaction.
3. Single Replacement Reaction: This type involves one element replacing another element in a compound, resulting in a new element and a new compound. Here, strontium (Sr) replaces one of the hydrogen atoms in water (H₂O), resulting in the formation of strontium hydroxide (Sr(OH)₂) and hydrogen gas (H₂). This matches the description of a single replacement reaction.
4. Double Replacement Reaction: This occurs when the ions of two compounds exchange places in an aqueous solution to form two new compounds. The equation above does not fit this type because an elemental metal (Sr) reacts with a compound (H₂O), rather than two ionic compounds exchanging ions.
5. Neutralization Reaction: This is a specific type of double replacement reaction that occurs between an acid and a base to produce a salt and water. The given reaction doesn't involve an acid and a base.
Considering the above definitions and the nature of the reaction where strontium replaces hydrogen in water, the correct classification for the given reaction is a single replacement reaction.
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