A) The chemical equation for the reaction is [tex]Cl_2(aq) + 2KBr(aq)[/tex] ⟶ [tex]2KCl(aq) + Br_2(aq)[/tex]
B)No reaction occurs when elemental iodine is mixed with lithium chloride. [tex]I_2(aq) + 2LiCl(aq)[/tex]⟶ No Reaction
A) To predict whether a reaction will occur when elemental chlorine ([tex]Cl_2[/tex]) and potassium bromide (KBr) are mixed, we can refer to the activity series for the halogens. According to the activity series, chlorine is more reactive than bromine. Therefore, chlorine can displace bromine from its compounds.
The chemical equation for the reaction between chlorine and potassium bromide can be written as:
[tex]Cl_2(aq) + 2KBr(aq)[/tex] ⟶ [tex]2KCl(aq) + Br_2(aq)[/tex]
In this reaction, chlorine displaces bromine from potassium bromide, resulting in the formation of potassium chloride and elemental bromine.
B) Similarly, to predict whether a reaction will occur when elemental iodine ([tex]l_2[/tex]) and lithium chloride (LiCl) are mixed, we can refer to the activity series. In the halogen activity series, iodine is less reactive than chlorine and bromine. Therefore, it is less likely for iodine to displace chlorine or bromine from their compounds.
The chemical equation for the reaction between iodine and lithium chloride can be written as:
[tex]I_2(aq) + 2LiCl(aq)[/tex]⟶ No Reaction
No reaction occurs because iodine is less reactive than chlorine, and lithium chloride does not react with iodine under these conditions.
Therefore, when elemental chlorine is mixed with potassium bromide, a reaction occurs and chlorine displaces bromine. On the other hand, no reaction occurs when elemental iodine is mixed with lithium chloride.
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