MCQ
Which reagent is useful in converting $1-$ butanol to $1-$ bromobutane
- A$CHB{r_3}$
- B$B{r_2}$
- C$C{H_3}Br$
- ✓$PB{r_3}$
$3C{H_3}C{H_2}C{H_2}C{H_2} - Br + {H_3}P{O_3}$
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Reason : Free energy change for this process is positive.


$(a)$ tetraamminecobalt $(III)$ dim-hydroxidotetra amminecobalt $(III)$ ion
$(b)$ di $-\mu -$ hydroxidobis(tetraammine)dicobalt $(III)$
$(c)$ Bis $-(\mu -$ hydroxidotetraamminecobalt $(III))$
$(d)$ di $-\mu-$ hydroxidooctaamminedicobalt $(III)$
correct option is