If aqueous solutions of na2so4 and bacl2 are mixed, does a precipitate form? if yes, identify the precipitate and the spectator ions.

- A precipitate of is formed and the spectator ions are  and .

Explanations:- A double replacement reaction takes place. In double replacement reaction, the ion exchange takes place and we write the products. Then we use the solubility chart to check if a precipitate forms.

The balanced molecular equation is:

From solubility chart barium sulfate is insoluble so its precipitate is formed. sodium and chlorine ions are spectator ions as shown in the below ionic equation.

The net ionic equation is:

So, the spectator ions are  and and a precipitate of is formed.

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.