Given the following list from the activity series of metals (from most active to least active)
K, Na, Al, Mn, Cr, Cd, Co, Pb, Hg
which reaction would you NOT expect to occur?
1. All of the listed reactions will occur.
2. Na(s) +Mn2+(aq) -> Na+(aq) +Mn(s)
3. Al3+(aq) + Cr(s) -> Cr3+(aq) + Al(s)
4. Co2+(aq) + Al(s) -> Al3+(aq) + Co(s)
5. Cd(s) + Pb2+(aq) -> Pb(s) + Cd2+(aq)
3
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Is Chromium more active than aluminum?
To determine which reaction would NOT occur based on the given activity series of metals, we need to compare the reactivity of the metals involved in each reaction.
In the activity series, metals higher up are more reactive than metals lower down. Reaction occurs when a more reactive metal displaces a less reactive metal from its compound.
Let's analyze each reaction:
1. All of the listed reactions will occur. - This option assumes that all reactions are possible. However, it is important to note that not all reactions may occur in reality.
2. Na(s) + Mn2+(aq) -> Na+(aq) + Mn(s) - Sodium (Na) is a very reactive metal, while manganese (Mn) is less reactive. Hence, this reaction would occur, as sodium can displace manganese from its compound.
3. Al3+(aq) + Cr(s) -> Cr3+(aq) + Al(s) - Aluminum (Al) is a more reactive metal compared to chromium (Cr). Therefore, this reaction would occur, as aluminum can displace chromium from its compound.
4. Co2+(aq) + Al(s) -> Al3+(aq) + Co(s) - Aluminum (Al) is more reactive than cobalt (Co). Therefore, this reaction would occur, as aluminum can displace cobalt from its compound.
5. Cd(s) + Pb2+(aq) -> Pb(s) + Cd2+(aq) - Cadmium (Cd) is more reactive than lead (Pb). Therefore, this reaction would occur, as cadmium can displace lead from its compound.
Based on the information provided, all of the listed reactions are expected to occur. Thus, the correct answer would be option 1 - All of the listed reactions will occur.