Multiple Choice
Based on the activity series, rank the following metals from most reactive (1) to least reactive (3): tantalum, niobium, dubnium.
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6. Chemical Quantities & Aqueous Reactions
Activity Series
Multiple Choice
Based on your understanding of activities determine if a reaction occurs and if so provide the products formed.
Zn (s) + NiCl2 (aq) →
A
Zn (s) + 2 NiCl2 (aq) → ZnCl2 (aq) + 2 Ni (s)
B
Zn (s) + NiCl2 (aq) → 2 ZnCl2 (aq) + Ni (s)
C
Zn (s) + NiCl2 (aq) → ZnCl2 (aq) + Ni (s)
D
No reaction
Verified step by step guidance1
Identify the type of reaction: This is a single displacement reaction where a more reactive metal displaces a less reactive metal from its compound.
Consult the activity series of metals: The activity series is a list of metals ranked by their reactivity. A metal can displace another metal from a compound if it is higher in the activity series.
Compare the reactivity of Zn and Ni: Zinc (Zn) is more reactive than Nickel (Ni) according to the activity series.
Predict the products: Since Zn is more reactive, it will displace Ni from NiCl2, forming ZnCl2 and Ni.
Write the balanced chemical equation: The balanced equation for the reaction is Zn (s) + NiCl2 (aq) → ZnCl2 (aq) + Ni (s).
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