Problem: The metal cadmium tends to form Cd2+ ions. The following observations are made: (i) When a strip of zinc metal is placed in CdCl2(aq), cadmium metal is deposited on the strip. (ii) When a strip of cadmium metal is placed in Ni(NO3)2(aq), nickel metal is deposited on the strip.Which elements more closely define the position of cadmium in the activity series?

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We’re being asked to determine which elements more closely define the position of cadmium in the activity series.


Recall that the activity series gives us the relative reactivities of metals to oxidationmetals higher in the activity series are more reactive to oxidation and vice-versa.


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Problem Details

The metal cadmium tends to form Cd2+ ions. The following observations are made: (i) When a strip of zinc metal is placed in CdCl2(aq), cadmium metal is deposited on the strip. (ii) When a strip of cadmium metal is placed in Ni(NO3)2(aq), nickel metal is deposited on the strip.

Which elements more closely define the position of cadmium in the activity series?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Activity Series concept. You can view video lessons to learn Activity Series. Or if you need more Activity Series practice, you can also practice Activity Series practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Wright's class at CCNY.