MCQ
$CrO_3$ dissolves in aqueous $NaOH$ to give
- A$Cr_7O_7^{2-}$
- ✓$CrO_4^{2-}$
- C$Cr(OH)_3$
- D$Cr(OH)_2$
✓
Answer
Correct option: B.
$CrO_4^{2-}$
b
$\mathrm{CrO}_{3}$ reacts with aqueous NaOH to form $\mathrm{Na}_{2} \mathrm{CrO}_{4}$ that is $\mathrm{CrO}_{4}^{-2}$
$\mathrm{CrO}_{3}$ reacts with aqueous NaOH to form $\mathrm{Na}_{2} \mathrm{CrO}_{4}$ that is $\mathrm{CrO}_{4}^{-2}$
$\mathrm{CrO}_{3}+2 \mathrm{NaOH} \rightarrow \mathrm{Na}_{2} \mathrm{CrO}_{4}+\mathrm{H}_{2} \mathrm{O}$
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