Assign $A$,$B$,$C$,$D$ from the given type of reaction.
$Na_2CrO_4 + HCl \longrightarrow H_2Cr_2O_7 + NaCl$
$Na_2CrO_4 + HCl \longrightarrow H_2Cr_2O_7 + NaCl$
- A$A$. for coloured ppt./Black ppt.
- B$B$. for coloured solution.
- C$C$. for clear/colourless solution
- D$D$. for white ppt.
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$MnO_4^{-}$ reacts with $A^{x+}$ to form $AO_3^{-}$,$Mn^{2+}$ and $O_2$. One mole of $MnO_4^{-}$ oxidizes $1.25$ moles of $A^{x+}$ to $AO_3^{-}$. What is the value of $x$?
In alkaline medium,the reduction of permanganate anion involves a gain of $........$ electrons.
Explain why the colour of $KMnO_4$ disappears when oxalic acid is added to its solution in acidic medium.
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View SolutionIn acidic medium,dichromate ion oxidises ferrous ion to ferric ion. If the gram molecular weight of potassium dichromate is $294 \ g$,its gram equivalent weight is $...$ grams.
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View SolutionThe equivalent weight of $K_2Cr_2O_7$ in an acidic medium is...... (Molecular weight $= M$)
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