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प्रश्न
Complete the following ionic equation:
\[\ce{Cr2O^{2-}7 + 2OH^- ->}\]
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उत्तर
\[\ce{Cr2O^{2-}7 + 2OH^- -> 2CrO^{2-}4 + H2O}\]
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संबंधित प्रश्न
Describe the preparation of potassium dichromate from iron chromite ore. What is the effect of increasing pH on a solution of potassium dichromate?
Describe the preparation of potassium permanganate. How does the acidified permanganate solution react with iron (II) ions? Write the ionic equation for the reaction.
Complete the following equations:
`2MnO_4^(-)+16H^++5S^(2-)rarr`
Name a member of the lanthanoid series that is well-known to exhibit +2 oxidation state.
Write the ionic equation showing the oxidation of Fe(II) salt by acidified dichromate solutions.
Generally transition elements and their salts are coloured due to the presence of unpaired electrons in metal ions. Which of the following compounds are coloured?
(i) \[\ce{KMnO4}\]
(ii) \[\ce{Ce(SO4)2}\]
(iii) \[\ce{TiCl}\]
(iv) \[\ce{Cu2 Cl2}\]
Complete the reaction mentioning all the products formed:
\[\ce{Cr2O^{2-}7 + 3H2S + 8H^+ ->}\]
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chromite ore.
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chromite ore.
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chromite ore.
