Question

Potassium (k combines with magnesium bromide (mgbr2 to form potassium bromide (kbr and magnesium (mg during a single replacement reaction. which of the following shows the balanced chemical equation for this reaction?

Answer 1

The reaction is:

2K(s) + MgBr₂(s) --> 2KBr(s) + Mg(s)

Step-by-step explanation:

The reaction between potassium and magnesium bromide can be balanced by considering the fact that one mole of magnesium bromide will react with two moles of potassium to give two moles of potassium bromide and one mole of Magnesium.

Thus the balanced equation will be:

2K(s) + MgBr₂(s) --> 2KBr(s) + Mg(s)

Answer 2

In balancing reactions, the number of atoms on each side should be of equal number. It is the most important rule in reactions. Also, we should know the correct substances involved in the reaction. We do as follows:

2K + MgBr2 = 2KBr + Mg