Question

$C{l}_2$ gas is obtained by various reactions but not by:

• A. $KMn{O}_4\left(s\right)+conc.HCl\stackrel{\Delta }{⟶}$
• B. $KCl\left(s\right)+K_{2}C{r}_2{O}_7\left(s\right)+conc.H_{2}S{O}_4\stackrel{\Delta }{⟶}$
• C. $Mn{O}_2\left(s\right)+conc.HCl\stackrel{\Delta }{⟶}$
• D. $2KCl\left(s\right)+F_2\left(l\right)⟶$

Answer 1

The correct option is B $KCl\left(s\right)+K_{2}C{r}_2{O}_7\left(s\right)+conc.H_{2}S{O}_4\stackrel{\Delta }{⟶}$

$\left(A\right)2Mn{O}_4^{-}+16H^{+}+10C{l}^{-}⟶2M{n}^{2+}+8H_{2}O+5C{l}_2$

$\left(B\right)C{r}_r{O}_7^{2-}+4C{l}^{-}+6H^{+}⟶2Cr{O}_{2}C{l}_2\uparrow \left(deepred\right)+3H_{2}O\left(\text{Chromyl chloride test}\right)$

$\left(C\right)Mn{O}_2+4HCl⟶MnC{l}_2+C{l}_2+2H_{2}O$

$\left(D\right)2C{l}^{-}+F_2⟶C{l}_2+2F^{-}$