Question

making predictions about reactions
complete the following equations (note that the equations are not balanced). use the activity series if necessary
li > k > ba > sr > ca > na > mg > al > mn > zn > cr > fe > cd >
co > ni > sn > pb > h > sb > bi > cu > ag > pd > hg > pt > au

1. al + agcl → ?

☑ alcl₃ + ag
☐ alag₃ + cl₂
☐ no reaction
☐ alcl + cl

1. mg + ca(oh)₂ → ?

☐ mg(oh)₂ + ca
☐ no reaction
☐ mgh₂ + cao
☐ mgca + h₂o

Explanation:

Step1: Compare metal reactivity

From the activity series: $\text{Mg} > \text{Ca}$ is false; $\text{Ca}$ is more reactive than $\text{Mg}$.

Step2: Determine reaction feasibility

A less reactive metal ($\text{Mg}$) cannot displace a more reactive metal ($\text{Ca}$) from its compound.

Answer:

no reaction