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The d & f Block Elements — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryThe d & f Block Elements1 Mark
MCQ
When acidified $\ce{K_2Cr_2O_7}$ solution is added to $Sn^{2+}$ salts then $Sn^{2+}$ changes to
  • A
    $Sn$
  • B
    $Sn^{3+}$
  • ✓
    $Sn^{4+}$
  • D
    $Sn^{+}$
✓

Answer

Correct option: C.
$Sn^{4+}$
Thus, Acidified potassium dichromate will oxidize tin$(II)$ to tin$(IV)$
$\text{Cr}_2\text{O}_7^{2-}+14\text{H}^++3\text{Sn}^{2+}\rightarrow2\text{Cr}^{3+}+3\text{Sn}^{4+}+7\text{H}_2\text{O}$

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