what is the reaction between potassium chloride and bromine?
no reaction. Cl2 and KBr is yes, Br2 and KCl none.
so what id the chemical equation?
KCl + Br2 = no reaction
The reaction between potassium chloride (KCl) and bromine (Br2) involves a redox reaction, where potassium chloride is oxidized and bromine is reduced. The chemical equation for this reaction is as follows:
2 KCl + Br2 → 2 KBr + Cl2
To understand this reaction and determine the products, we need to consider the activity series and oxidation numbers.
First, let's determine the oxidation states (oxidation numbers) of each element in the reactants:
In potassium chloride (KCl), potassium (K) has an oxidation state of +1, and chlorine (Cl) has an oxidation state of -1.
In bromine (Br2), each bromine atom has an oxidation state of 0 since it exists as an element.
Since potassium (K) has a lower activity (lower position) in the activity series compared to bromine (Br2), it is easier for bromine to oxidize the potassium than it is for Cl2 to oxidize bromine.
During the reaction:
1. Bromine (Br2) gains an electron from two potassium atoms (K) and gets reduced to bromide ions (Br-). The oxidation state of bromine changes from 0 to -1.
2. Two potassium atoms (K) lose one electron each and get oxidized to form two potassium ions (K+). The oxidation state of potassium changes from +1 to 0.
As a result, the potassium chloride (KCl) reacts with bromine (Br2) to form potassium bromide (KBr) and chlorine gas (Cl2) as the products.
To summarize, the reaction between potassium chloride and bromine forms potassium bromide and chlorine gas.