What is meant by iodimetry?

• Chromatographic analysis method

• Spectroscopic analysis method

• Gravimetric analysis method

• Titrimetric analysis method based on redox reactions

What reaction occurs when I2 is reduced?

• I2 + 2OH- → 2I- + H2O

• I2 + 2H+ → 2I+

• I2 + 2e- → 2I-

• I2 + 2Na+ → 2NaI

Why must iodine standard solution be stored in a dark container?

• To prevent oxidation by light

• To reduce reactions with air

• To increase solubility

• To maintain temperature stability

What happens at low pH during iodimetric titration?

• I- will react with H+ and oxygen

• I2 will degrade

• The reaction proceeds faster

• The reaction does not occur

What is meant by a primary standard solution?

• A solution with a high level of purity

• An unstable solution

• A solution that is easily oxidized

• A solution that is insoluble in water

What indicator is commonly used in iodometric titration?

• Starch

• Phenolphthalein

• Methyl orange

• Bromothymol blue

What should be done if the reductant is weak in iodometric titration?

• Add a little acid as a catalyst

• Use another indicator

• Increase the temperature of the solution

• Use a basic solution

Why is potassium iodide added in the preparation of iodine standard solution?

• To stabilize the pH

• To accelerate the reaction

• To reduce the reaction with oxygen

• To increase the solubility of iodine

What happens if the pH of the solution is too high in iodimetric titration?

• I2 will react with OH-

• I2 will degrade

• The reaction will proceed faster

• The reaction will stop

What should be done for the standardization of I2 solution?

• Using distilled water

• Using an indicator

• Using a primary standard solution

• Using a secondary standard solution