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प्रश्न
Which of the following statements is not true?
विकल्प
on passing H2S, through acidified K2Cr2O7 solution, a milky colour is observed.
Na2Cr2O7 is preferred over K2Cr2O7 in volumetric analysis
K2Cr2O7 solution in acidic medium is orange in colour
K2Cr2O7 solution becomes yellow on increasing the PH beyond 7
उत्तर
Na2Cr2O7 is preferred over K2Cr2O7 in volumetric analysis
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संबंधित प्रश्न
What is the geometry of chromate ion?
- Tetrahedral
- Octahedral
- Trigonal planer
- Linear
What is the molecular formula of chromyl chloride?
(A) CrO2Cl2
(B) CrOCl2
(C) CrCl3
(D) Cr2OCl2
Draw structure of 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 ____________.
Permanganate ion changes to ____________ in acidic medium.
Describe the preparation of potassium dichromate.
Complete the following.
\[\ce{C6H5CH3 ->[acidified][KMnO4]?}\]
Complete the following.
\[\ce{Cr2O^2-_7 + I^- + H^+ ->?}\]
Explain why Cr2+ is strongly reducing while Mn3+ is strongly oxidizing.
