Question

Molecular weight of KBrO3 is M . What is the equivalent weight , if the reaction is BrO3 to Br

Answer 1

Equivalent weight is = M/6.

Explanation:

The molecular formula of POTASSIUM BROMATE is $KBrO_3$.

It is also written as $BrKO_3$.

It refers to potassium salt and a bromate salt.

Molecular Weight is measured as 167 g/mol.

Given that,

Molecular weight of $KBrO_3$ is M.  

The chemical reaction in acidic medium:

$BrO_3 ^- -> Br^-$ (Acidic medium)

Oxidation state of Br in $BrO_3 ^-$ is 5+

$Br^{5+} -> Br^-$    

$n =[5 - (- 1)] = 6$

We know that,

Equivalent weight = (Molecular weight)/n

= M/6

Hence, Equivalent weight is = M/6.