Redox Titrations
Chemistry ⇒ Redox Reactions and Electrochemistry
Redox Titrations starts at 11 and continues till grade 12.
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See sample questions for grade 11
A solution contains both Fe2+ and Fe3+. Which ion can be titrated directly with KMnO4?
Describe the difference between iodometric and iodimetric titrations.
Describe the role of an indicator in a redox titration.
Explain the term 'back titration' in the context of redox titrations.
A 0.025 M solution of sodium thiosulfate is used to titrate 25.0 mL of iodine solution. If 30.0 mL of thiosulfate is required, calculate the molarity of the iodine solution.
A 20.0 mL sample of 0.05 M oxalic acid is titrated with 0.02 M KMnO4 in acidic medium. Calculate the volume of KMnO4 required. (Reaction: 2 MnO4- + 5 C2O42- + 16 H+ → 2 Mn2+ + 10 CO2 + 8 H2O)
A 25.0 mL sample of 0.1 M FeSO4 is titrated with 0.02 M KMnO4. What volume of KMnO4 is required? (Reaction: 5 Fe2+ + MnO4- + 8 H+ → 5 Fe3+ + Mn2+ + 4 H2O)
A solution contains both Fe2+ and Fe3+. Which ion can be titrated directly with KMnO4?
Which indicator is commonly used in the titration of iodine with sodium thiosulfate?
(1) Methyl orange
(2) Starch
(3) Phenolphthalein
(4) Methyl red
Which of the following is a disadvantage of using KMnO4 in redox titrations?
(1) It is a strong oxidizing agent
(2) It acts as a self-indicator
(3) It is not stable in solution
(4) It gives a sharp endpoint
Which of the following is a primary standard used in redox titrations?
(1) KMnO4
(2) K2Cr2O7
(3) NaOH
(4) HCl
Which of the following is a suitable external indicator for dichromate titrations?
(1) Starch
(2) Diphenylamine
(3) Methyl orange
(4) Phenolphthalein
In a redox titration, the analyte is the solution of _______ concentration.
In a redox titration, the substance that undergoes reduction is called the _______ agent.
In a titration between Fe2+ and KMnO4 in acidic medium, the color change at the endpoint is from _______ to _______.
In iodometric titrations, sodium thiosulfate acts as a _______ agent.
In a redox titration, the equivalence point and the endpoint are always the same. True or False?
In a redox titration, the titrant is always the solution of known concentration. True or False?
In iodometric titrations, the blue-black color with starch disappears at the endpoint. True or False?
The titration of oxalic acid with KMnO4 requires heating. Yes or No?
