Chemical equations double-displacement reactions

In summary, to determine the products and their physical states in a double displacement reaction, you must first deconstruct the reactants. Then switch the cations, and reconstruct the products using proper chemical formulas. You should then balance the chemical equation. You will be given information to determine which of the products, if any, will form a precipitate. Finally, you can write the physical state—(s) or (aq)— of each product and balance the equation. 

Write a balanced chemical equation for each double displacement reaction. Write NR if you predict that no reaction will occur. Note that K+, Na+, and Li+ ions form soluble compounds with all anions. All nitrate compounds are soluble. Sulfate compounds with Ca2+,... 

Consider the reaction of aqueous sodium carbonate (washing soda) and hydrochloric acid, shown in Figure 4.17. Hydrochloric acid is sold at the hardware store under the common name muriatic acid. If you carry out this reaction, you immediately see the formation of carbon dioxide gas. The first reaction that takes place is a double displacement reaction. Determine the products in the following way. Separate the reactions into ions, and switch the anions. Write chemical formulas for the products and balance the equation. 

For each reaction in Table B, write the appropriate balanced chemical equation for the double displacement reaction. Then write a balanced chemical equation for the decomposition reaction that leads to the formation of a gas and water. 

When you mix two aqueous ionic compounds together, there are two possible outcomes. Either the compounds will remain in solution without reacting, or one aqueous ionic compound will chemically react with the other. How can you predict which outcome will occur Figure 9.4 shows what happens when an aqueous solution of lead(II) nitrate is added to an aqueous solution of potassium iodide. As you can see, a yellow solid—a precipitate—is forming. This is a double displacement reaction. Recall, from Chapter 4, that a double displacement reaction is a chemical reaction that involves the exchange of ions to form two new compounds. It has the general equation... 

In this section, you will examine each of these results. At the same time, you will learn how to represent a double displacement reaction using a special kind of chemical equation an ionic equation. 

Write balanced chemical equations and net ionic equations for double-displacement reactions. 

Identify double-displacement reactions, and write chemical equations that predict the products. 

Let s suppose we were to carry out a chemical reaction between aqueous solutions of lead (II) chlorate and sodium iodide. We mix the two solutions in a test tube, and we find that a solid precipitate forms and falls to the bottom of the test tube. We would want to be able to identify what the solid was. The first thing that we might want to do is make a word equation for the reaction that we think is taking place. Treating this as a double displacement reaction, we would get the word equation shown here ... 

When a solution of 25.0 g of silver nitrate in 100 g of water is mixed with a solution of 10.0 g of magnesium chloride in 100 g of water, a double displacement reaction occurs. The balanced chemical equation is shown below. Which is the limiting reactant ... 

Many solids must be put into solution to undergo appreciable chemical reaction. We can write the equation for the double-displacement reaction between sodium chloride and silver nitrate ... 

The subscript after potassium in the chemical formula for potassium sulfate shows that two potassium ions are needed. Potassium sulfate is a salt. When the two equations are put together (as they would occur when the acid and base are mixed together), they represent the double displacement neutralization reaction that occurs between sulfuric acid and potassium hydroxide ... 

Classify each reaction as synthesis, decomposition, single displacement, double displacement, or combustion. Also, balance each chemical equation. 

Copper(ll) chloride and lead(II) nitrate react in aqueous solutions by double displacement. Write the balanced chemical equation, the overall ionic equation, and the net ionic equation for this reaction. If 13.45 g of copper(II) chloride react, what is the maximum amount of precipitate that could be formed ... 

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