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Describe the preparation of potassium di...

Describe the preparation of potassium dichromate from chromite ore. What is the effect of increasing pH of potassium dichromate solution ?

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### Step-by-Step Solution **Step 1: Understanding Chromite Ore** - Chromite ore is represented by the chemical formula FeCr₂O₄. It is the primary source of chromium. **Step 2: Reaction with Sodium Hydroxide (NaOH)** - The first step in the preparation of potassium dichromate from chromite ore involves reacting chromite ore with sodium hydroxide (NaOH) and oxygen (O₂). - The reaction can be represented as: ...
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Describe the preparation of potassium dichromate from chromite ore. What is the effect of increasing pH on solution of potassium dichromate ?

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Knowledge Check

  • The colour of potassium dichromate is

    A
    orange.
    B
    yellow.
    C
    purple.
    D
    colourless.

  • Potassium dichromate is used

    A
    in leather industry
    B
    as an oxidant for the preparation of many azo compounds
    C
    Both (a) and (b)
    D
    None of the above

  • Potassium dichromate is used

    A
    in electroplating
    B
    as a reducing agent
    C
    oxidise ferrouse ion into ferric ions in acidic media as
    D
    oxidise ferrous ions into ferric ions in acidic media as an oxidsing agent

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    Give the preparation of potassium permanganate from pyrolusite ore.

    Write the formula of potassium dichromate

    (a) Describe the preparation of potassium dichromate from chromite ore: (b) How does the acidified solution of potassium permanganate react with (i) oxalic acid (ii) iron (II) ions.

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