Question

What is a balanced chemical equation for liquid bromine and aqueous sodium chloride formed by the reaction of aqueous sodium bromide and chlorine gas? Also include physical states.

Answer 1

According to the given statement, it can be stated as aq. Sodium bromide and chlorine gas react to form aq. Sodium chloride and liquid bromine. This is the single displacement reaction involving halides.

Complete answer:
Let us answer the given question knowing some basics;
The balanced chemical equation along with physical states of the reactants and products is necessary to understand the chemical reaction in detail. Balancing comprises putting the stoichiometric coefficients if needed by cross checking if the moles of reactants is equal to the moles of products.
The stated reaction is the single replacement reaction which depends upon the positioning of the halide ions involved. According to the given data the balanced chemical equation can be stated as;
$C{{l}_{2\left( g \right)}}+2NaB{{r}_{\left( aq \right)}}\to B{{r}_{2\left( l \right)}}+2NaC{{l}_{\left( aq \right)}}$

Note:
This single replacement reaction involves the reactivity order and specificity. In the periodic table chlorine is placed above the bromine, it will replace the bromine to form NaCl and liquid bromine.
Do note that the reactivity goes from highest (fluorine) to lowest (astatine) in the group XVII i.e. halides.