Precipitation Titrations Quiz

What is the primary purpose of a titration?

• To change the color of a solution

• To determine the concentration of an unknown substance

• To increase the temperature of a reaction

• To create a new compound

Which ions are typically involved in precipitation titrations?

• Silver and halide ions

• Calcium and carbonate ions

• Sodium and potassium ions

• Magnesium and sulfate ions

In the Mohr method, what is used as an indicator?

• Methyl orange

• Bromothymol blue

• Potassium chromate

• Phenolphthalein

What type of solution is used in the Volhard method?

• Neutral solution

• Alkaline solution

• Basic solution

• Acidic solution

Which compound is used to detect excess silver in the Volhard method?

• Potassium chromate

• Sodium chloride

• Potassium thiocyanate

• Ammonium sulfate

Which method involves a back titration technique?

• Volhard method

• Redox titration

• Mohr method

• Fajans method

What is the key feature of the Fajans method?

• Use of a neutral solution

• Use of a colored dye

• Use of a basic solution

• Use of a complex ion

In the Fajans method, what happens to the dye at the endpoint?

• It dissolves completely

• It changes color

• It forms a precipitate

• It evaporates

What is the main difference between acid-base and precipitation titrations?

• The use of a conical flask

• The type of reaction involved

• The measurement of temperature

• The use of a burette

What is the role of silver ions in precipitation titrations?

• To act as a catalyst

• To increase the pH

• To form a precipitate with halide ions

• To neutralize the solution