- Consult the provided activity series: \(F_2 > Cl_2 > Br_2 > I_2\).
- Compare the activity of the elemental halogen (\(Br_2\)) with the halogen in the compound (\(Cl\)).
- Since \(Cl_2 > Br_2\), Bromine is less active and cannot displace Chlorine from \(CCl_4\).
- Conclude that there is no reaction, thus the final answer is \(\boxed{\text{no reaction}}\).
Explanation
- Understanding the Activity Series
To predict the outcome of the reaction \(CCl_4 + Br_2 \rightarrow ?\), we must consult the provided activity series for halogens. The series is given as: \(F_2 > Cl_2 > Br_2 > I_2\). An activity series dictates the ability of a halogen to displace another halogen from a compound. A halogen can only displace a less active halogen from its compound if it is more active itself.
- Comparing Halogen Reactivity
In the reaction \(CCl_4 + Br_2\), we have Chlorine (\(Cl\)) bound in carbon tetrachloride (\(CCl_4\)) and Bromine (\(Br\)) as the elemental reactant (\(Br_2\)). Looking at our activity series, we see that \(Cl_2\) is to the left of \(Br_2\), which means Chlorine is more active than Bromine (\(Cl_2 > Br_2\)). For a displacement reaction to occur, the elemental halogen (\(Br_2\) in this case) would need to be more active than the halogen already in the compound (\(Cl\)). Since Bromine is less active than Chlorine, it does not have the chemical potential to displace Chlorine from the \(CCl_4\) molecule.
- Conclusion
Because the elemental Bromine (\(Br_2\)) is less active than the Chlorine present in the carbon tetrachloride (\(CCl_4\)), no chemical reaction will occur between these two substances. Therefore, the correct prediction for the products is 'no reaction'.
Examples
The concept of an activity series is fundamental in chemistry for predicting whether a chemical reaction will proceed. For example, when choosing materials for plumbing or construction, engineers use these series to determine which metals are likely to corrode when exposed to certain environments. Just as halogens compete for electrons, metals compete to form ions, helping us understand material durability and chemical safety in everyday life.