Question

Based on the activity series, predict whether each of the following possible reactions will occur.

I am stuck on this, can someone please explain how they got their answer?

Mg(s)+Co(NO3)2(aq)---->

Answer 1

Do you have a copy of the activity series? You need to look at the chart.

Answer 2

A metal is only able to displace something below it, but not the other way around.

Answer 3

Mg is highly reactive, \(\sf Co^{2+}\) will "displace" (i.e. oxidize) Mg and precipitate as a solid metal.

Answer 4

Yes I do and the series and I understand now. Thank you both.