What makes a double replacement reaction occur

Privacy Policy. Skip to main content. Chapter 4. Chemical Reactions and Equations. Search for:. Types of Chemical Reactions: Single- and Double-Displacement Reactions Learning Objectives Recognize chemical reactions as single-replacement reactions and double-replacement reactions. Use the periodic table, an activity series, or solubility rules to predict whether single-replacement reactions or double-replacement reactions will occur.

Figure 4. Example 2 Will a single-replacement reaction occur? Solution Because iodine is below chlorine on the periodic table, a single-replacement reaction will not occur. Because fluorine is above bromine on the periodic table, a single-replacement reaction will occur, and the products of the reaction will be CaF 2 and Br 2. Test Yourself Will a single-replacement reaction occur? Answer Yes; FeCl 2 and I 2.

Example 3 Use the activity series to predict the products, if any, of each equation. Solution Because zinc is above iron in the activity series, it will replace iron in the compound. The products of this single-replacement reaction are ZnCl 2 and Fe.

Gold is below hydrogen in the activity series. As such, it will not replace hydrogen in a compound with the nitrate ion. No reaction is predicted. Test Yourself Use the activity series to predict the products, if any, of this equation. Answer Mg 3 PO 4 2 and Al.

Solution Thinking about the reaction as either switching the cations or switching the anions, we would expect the products to be BaSO 4 and NaCl. Example 5 Will a double-replacement reaction occur? Now we consider what the double-replacement products would be by switching the cations or the anions —namely, CaBr 2 and KNO 3. Facebook Facebook Twitter Twitter. Key Takeaways: Double Replacement Reaction A double replacement reaction is a type of chemical reaction that occurs when two reactants exchange cations or anions to yield two new products.

Double replacement reactions are also called double replacement reactions, double displacement reactions, or metathesis reactions. Neutralization, precipitation, and gas formation are types of double replacement reactions. Featured Video. Cite this Article Format. Helmenstine, Anne Marie, Ph. Double Replacement Reaction Definition. Double Displacement Reaction Definition and Examples. Examples of Chemical Reactions in Everyday Life. What Is a Displacement Reaction in Chemistry?

Single-Displacement Reaction Definition and Examples. In the past, for example, items like chickens were bartered for newspapers. Person A had something that person B wanted, and vice versa.

So, when person A and person B traded items, they each had something new. Some chemical reactions are like that—compounds swap parts, and the products are new materials. A double-replacement reaction 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:.

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. May 3, Production of insoluble precipitate. Related questions How do you balance the chemical equations for double replacement reactions? Question c5c How do you write chemical equation for the neutralization of nitric acid, HNO3, with magnesium