potassium dichromate

Question

In iodometric titration, potassium dichromate is used in:

RankGuru · Accepted Answer

**Iodometric Titration** is an indirect method where iodine is liberated and then titrated.
1. **Step**: The unknown oxidizing agent (like **$K_2Cr_2O_7$**) is reacted with an excess of **Potassium iodide ($KI$)** in acidic medium.
$Cr_2O_7^{2-} + 14H^+ + 6I^- 	o 2Cr^{3+} + 3I_2 + 7H_2O$
2. **Step**: The **liberated Iodine ($I_2$)** is then titrated with a standard **Sodium thiosulfate ($Na_2S_2O_3$)** solution using starch as an indicator.
- This contrasts with **Iodimetric** titrations, where iodine is the direct titrant.

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potassium dichromate

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More potassium dichromate Practice Questions

In acidic medium, Cr2O7²⁻ acts as an oxidizing agent reducing to: