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19 May, 01:10

Solid iron sulfide combines with aqueous hydrogen chloride to form hydrogen sulfide gas and aqueous iron chloride.

Which type of chemical reaction is this an example of?

double-displacement

decomposition

synthesis

single-displacement

+1
Answers (1)
  1. 19 May, 01:39
    0
    Fe2S3 + 6HCl → 3H2S + 2FeCl3 is a double-displacement reaction

    Explanation:

    Step 1: The balanced equation

    Fe2S3 + 6HCl → 3H2S + 2FeCl3

    Step 2:

    Decomposition: This is a reaction in which a compound breaks down into two or more simpler substances. Most decomposition reactions require an input of energy in the form of heat, light, or electricity.

    The general form of a decomposition reaction is: AB→A+B

    In our case, this is not a decomposition reaction.

    Synthesis: This is a type of chemical reaction in which two or more simple substances combine to form a more complex product. The reactants may be elements or compounds, while the product is always a compound.

    The general form of a decomposition reaction is: A + B → AB

    In our case, this is not a synthesis reaction.

    Single-displacement reaction: This is a reaction in which one element replaces a similar element in a compound. The general form of a single-replacement (also called single-displacement) reaction is:

    A+BC→AC+B

    In our case, this is not a single-displacement reaction.

    Double - displacement reaction: This is a reaction in which the positive and negative ions of two ionic compounds exchange places to form two new compounds. The general form of a double-replacement (also called double-displacement) reaction is:

    AB+CD→AD+B

    In this reaction, A and C are positively-charged cations, while B and D are negatively-charged anions. Double-replacement reactions generally occur between substances in aqueous solution. In order for a reaction to occur, one of the products is usually a solid precipitate, a gas, or a molecular compound such as water.

    In our case: There occurs a duble replacement between Fe^3 + and S^2 - with H + and Cl-.

    Fe2S3 + 6HCl → 3H2S + 2FeCl3 is a double-displacement reaction
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