Question

day 1: homework

1. circle any reactions that will not occur.

ba + nullo₃ fe + pb(c₆h₃o₂)₂ kcl + ni
mg + hcl hbr + au cu + agno₃

Explanation:

Step1: Use activity series rule

A metal reacts if it is more reactive than the metal in the compound (or for acids, more reactive than H).

Step2: Analyze Ba + NaNO₃

Na is more reactive than Ba. No reaction.

Step3: Analyze Fe + Pb(C₂H₃O₂)₂

Fe is more reactive than Pb. Reaction occurs.

Step4: Analyze KCl + Ni

K is more reactive than Ni. No reaction.

Step5: Analyze Mg + HCl

Mg is more reactive than H. Reaction occurs.

Step6: Analyze HBr + Au

Au is less reactive than H. No reaction.

Step7: Analyze Cu + AgNO₃

Cu is more reactive than Ag. Reaction occurs.

Answer:

The reactions that will NOT occur are:

1. $\text{Ba} + \text{NaNO}_3$
2. $\text{KCl} + \text{Ni}$
3. $\text{HBr} + \text{Au}$