Do NOW Predicting Double Replacement Reactions

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What is a double replacement reaction?

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A double replacement reaction is a type of chemical reaction where two compounds exchange ions to form two new compounds.

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What are the general characteristics of double replacement reactions?

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1. Typically occur in aqueous solutions. 2. Involve the exchange of ions. 3. Often produce a precipitate, gas, or water.

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What is a precipitate in a chemical reaction?

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A precipitate is a solid that forms and settles out of a liquid mixture during a chemical reaction.

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How do you predict the products of a double replacement reaction?

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1. Identify the reactants. 2. Exchange the ions of the reactants. 3. Determine the solubility of the products to see if a precipitate forms.

Front

What is the solubility rule for common salts?

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Most salts of sodium (Na+), potassium (K+), and ammonium (NH4+) are soluble in water.

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What happens when PbCl2 reacts with AgNO3?

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The products are AgCl(s) and Pb(NO3)2(aq), where AgCl is a precipitate.

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What is the outcome of mixing MgSO4 and NaCl?

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No reaction occurs because all possible products are soluble in water.

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What is the significance of balancing chemical equations?

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Balancing chemical equations ensures that the law of conservation of mass is followed, meaning the number of atoms of each element is the same on both sides of the equation.

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What is the role of spectator ions in double replacement reactions?

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Spectator ions are ions that do not participate in the reaction and remain unchanged in solution.

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What is the product of the reaction between Pb(NO3)2 and KI?

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The products are PbI2(s) and KNO3(aq), where PbI2 is a precipitate.