Chemistry · 2023
JEE Main · 31 January 2023, Shift 1 · Q40
Cobalt chloride when dissolved in water forms pink colored complex X which has octahedral geometry. This solution on treating with conc HCl forms…
Cobalt chloride when dissolved in water forms pink colored complex $\displaystyle \underline{\mathrm{X}}$ which has octahedral geometry. This solution on treating with conc HCl forms deep blue complex, $\displaystyle \underline{\mathrm{Y}}$ which has a $\displaystyle \underline{\mathrm{Z}}$ geometry. X, Y and Z, respectively, are
Official answer
From NTA’s final answer key for this paper.
(1)
$\displaystyle \mathrm{X}=\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}, \mathrm{Y}=\left[\mathrm{CoCl}_4\right]^{2-}, \mathrm{Z}=\text { Tetrahedral }$
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JEE Main 2023 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.