MCQ
Which equilibrium is not rapid at room temperature ?
- A

- ✓

- C

- D







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$Cr _2 O _7^{2-}+ XH ^{+}+6 Fe ^{2+} \rightarrow YCr ^{3+}+6 Fe ^{3+}+ ZH _2 O$
The sum of $X . Y$ and $Z$ is $.......$.
$(I)$ Bromine water
$(II)$ Tollen's reagents
$(III)$ Shiff's reagent
$(K_f $ for benzene $= 5.12 \,K\, kg\, mol^{-1})$