MCQ
$NaCl\,$ (solid) $+ \,{K_2}C{r_2}{O_7}$ (solid) $+$ conc.${H_2}S{O_4}\xrightarrow{{warm}}.$ Reddish brown fumes of $' X'$. The oxidation state of central atom in compound $'X'$ is
- ✓$+6$
- B$+3$
- C$+2$
- D$0$
✓
Answer
Correct option: A.
$+6$
a
$NaCl\,(s)\, + \,{K_2}C{r_2}{O_7}\,(s)\, + \,Conc.\,\mathop {{H_2}S{O_4}}\limits_{(few\,\,drops)} \xrightarrow{{Non\,\operatorname{Re} dox\,\,reaction}}\mathop {\mathop {Cr}\limits^{ + 6} {O_2}C{l_2}}\limits_{(Chromyl\,\,chloride)} $ (Reddish brown fumes)
$NaCl\,(s)\, + \,{K_2}C{r_2}{O_7}\,(s)\, + \,Conc.\,\mathop {{H_2}S{O_4}}\limits_{(few\,\,drops)} \xrightarrow{{Non\,\operatorname{Re} dox\,\,reaction}}\mathop {\mathop {Cr}\limits^{ + 6} {O_2}C{l_2}}\limits_{(Chromyl\,\,chloride)} $ (Reddish brown fumes)
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