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प्रश्न
Complete the reaction mentioning all the products formed:
\[\ce{Cr2O^{2-}7 + 3H2S + 8H^+ ->}\]
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उत्तर
\[\ce{Cr2O^{2-}7 + 3H2S + 8H^+ -> 2Cr^{3+} + 7H2O + 3S}\]
Dichromate oxidises hydrogen sulphide to sulphur in an acidic medium.
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संबंधित प्रश्न
Complete the following chemical equation
8MnO4- + 3S2O32- + H2O →
Indicate the steps in the preparation of KMnO4 from pyrolusite ore.
Complete the following equation :
Name a member of the lanthanoid series that is well-known to exhibit +2 oxidation state.
Zinc carbonate is precipitated from zinc sulphate solution by the addition of ___________.
Which of the following is amphoteric oxide?
\[\ce{Mn2O7, CrO3, Cr2O3, CrO, V2O5, V2O4}\]
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chromite ore.
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chromite ore.
Describe the preparation of potassium permanganate. How does the acidified permanganate solution react with SO2? Write the ionic equation for the reaction.
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chromite ore.
