Question

When an aqueous solution of magnesium nitrate is mixed with an aqueous solution of potassium carbonate, ____________.A) KNO3 will precipitateB) MgCO3 will precipitateC) both MgCO3 and KNO3 will precipitateD) no reaction occurs

Answer 1

Answer: The correct answer is Option B.

Step-by-step explanation:

Double displacement reaction is defined as the chemical reaction in which exchange of ions takes place.

`AB+CD\rightarrow AD+CB`

An insoluble salt in a solution is termed as a precipitate.

When an aqueous solution of magnesium nitrate reacts with an aqueous solution of potassium carbonate, it leads to the formation of an aqueous solution of potassium nitrate and a solid precipitate of magnesium carbonate.

The chemical equation for the above reaction follows:

`Mg(NO_3)_2(aq.)+K_2CO_3(aq.)\rightarrow MgCO_3(s)+2KNO_3(aq.)`

Hence, the correct answer is Option B.