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प्रश्न
What is the action of acidified potassium dichromate on - KI
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उत्तर १
Action of acidified potassium dichromate on KI:
Potassium iodide is oxidized to iodine by acidified potassium dichromate. Colour of the solution changes to brown due to the liberated iodine
Structure of dichromate ion:
उत्तर २
Action of acidified potassium dichromate on KI:
Potassium iodide is oxidized to iodine by acidified potassium dichromate. Colour of the solution changes to brown due to the liberated iodine
Structure of dichromate ion:
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संबंधित प्रश्न
What is the geometry of chromate ion?
- Tetrahedral
- Octahedral
- Trigonal planer
- Linear
Draw structure of dichromate ion
Draw the structure of the chromate ion.
Write observed electronic configuration of elements from first transition series having half
filled d-orbitals.
In acid medium, potassium permanganate oxidizes oxalic acid to ____________.
Which of the following statements is not true?
Permanganate ion changes to ____________ in acidic medium.
How many moles of I2 are liberated when 1 mole of potassium dichromate react with potassium iodide?
The number of moles of acidified KMnO4 required to oxidize 1 mole of ferrous oxalate (FeC2O4) is ____________.
Describe the preparation of potassium dichromate.
Complete the following.
\[\ce{C6H5CH3 ->[acidified][KMnO4]?}\]
Complete the following.
\[\ce{MnO^-_4 + Fe^2+ ->?}\]
Complete the following.
\[\ce{Cr2O^2-_7 + I^- + H^+ ->?}\]
Complete the following.
\[\ce{Na2Cr2O7 + KCl ->?}\]
Explain why Cr2+ is strongly reducing while Mn3+ is strongly oxidizing.
Why do the d-block elements form coloured compounds?
