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प्रश्न
Complete the following chemical equation
Cr2O72- + 3Sn2+ + 14H+ →
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उत्तर
Cr2O72- + 3Sn2+ + 14H+ → 2Cr3+ + 3Sn4+ + 7H2O
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संबंधित प्रश्न
Complete the following equation:
\[\ce{2MnO4- + 6H+ + 5NO2- ->}\]
When chromite ore FeCr2O4 is fused with NaOH in presence of air, a yellow-coloured compound (A) is obtained, which on acidification with dilute sulphuric acid gives a compound (B). Compound (B) on reaction with KCl forms an orange coloured crystalline compound (C).
(i) Write the formulae of the compounds (A), (B) and C.
(ii) Write one use of compound (C).
Complete the following chemical equation
8MnO4- + 3S2O32- + H2O →
Give an example and suggest a reason for the following feature of the transition metal chemistry:
The lowest oxide of transition metal is basic, the highest is amphoteric/acidic.
Indicate the steps in the preparation of K2Cr2O7 from chromite ore.
Indicate the steps in the preparation of KMnO4 from pyrolusite ore.
Complete the following equations:
`2MnO_4^(-)+16H^++5S^(2-)rarr`
KMnO4 is coloured due to ______.
Why \[\ce{HCl}\] should not be used for potassium permanganate titrations?
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chromite ore.
