What is a precipitation reaction?

• A reaction that forms an insoluble salt in an aqueous solution

• A reaction that produces only gaseous products

• A reaction that occurs in a gaseous state

• A reaction that involves only solid reactants

Which of the following is an example of a precipitation reaction?

• AgNO3(aqueous) + KCl(aqueous) —–AgCl(precipitate) + KNO3(aqueous)

• H2 + O2 —– H2O

• C + O2 —– CO2

• Na + Cl2 —– NaCl

What is the product formed when potassium chloride reacts with silver nitrate?

• Potassium nitrate

• Silver chloride

• Sodium chloride

• Calcium chloride

Which of the following is NOT a property of precipitation reactions?

• They occur in aqueous solutions

• They form insoluble products

• They always produce gaseous products

• They are ionic reactions

What is the chemical formula for the precipitate formed in the reaction between AgNO3 and NaCl?

• CaCl2

• AgCl

• NaNO3

• KCl

Which of the following factors does NOT affect precipitation reactions?

• Color of the reactants

• Buffer solution

• Concentration of the solution

• Temperature

What is the role of precipitation reactions in wastewater treatment?

• To precipitate out contaminated ions

• To increase the temperature of the water

• To dissolve contaminants

• To add more contaminants

Which of the following is a precipitate in the reaction between calcium chloride and potassium hydroxide?

• Potassium chloride

• Calcium hydroxide

• Sodium chloride

• Magnesium chloride

What is the chemical equation for the reaction between calcium chloride and potassium hydroxide?

• H2 + O2 —– H2O

• AgNO3(aqueous) + NaCl(aqueous) —- AgCl↓ + NaNO3 (aqueous)

• 2KOH(aqueous) + CaCl2(aqueous)—-Ca(OH)2(aqueous) + 2KCl(aqueous)

• Mg(OH)2(s) + 2HCl (aqueous) ——— MgCl2(aqueous) + 2H2O(l)

What is the definition of a precipitation reaction?

• A reaction that occurs in a solid state

• A reaction that forms a soluble salt in an aqueous solution

• A chemical reaction occurring in an aqueous solution where two ionic bonds combine, resulting in the formation of an insoluble salt

• A reaction that produces only liquid products