Question

Sodium sulfate, Na2SO4, and barium chloride, BaCl2, are soluble compounds that form clear solutions. However, when aqueous solutions of sodium sulfate and barium chloride are mixed together, a white solid (a precipitate) forms as shown in the image below.

10 Question (3points) a See page 170 Sodium sulfate, Na2SO4, and barium chloride, BaCl2, are soluble compounds that form clear solutions. However, when aqueous solutions of sodium sulfate and barium chloride are mixed together, a white solid (a precipitate) forms as shown in the image below

Answer 1

Concepts and reason

The concept used to solve this problem is writing net ionic equation for the given reaction.

Fundamentals

The ions that present on both side means reactant and product sides of a chemical reaction in the same form are called spectator ions.

Overall equation:

The equation which shows all of reactants and products in un-dissociated form is called overall equation. For example the overall equation of solutions of potassium bromide and silver nitrate is following:

Complete ionic equation:

The equation which shows strong electrolytes as ions is called the complete ionic equation. . For example the complete ionic equation of solutions of potassium bromide and silver nitrate is following

Net ionic equation:

Net ionic equation contains the species that are actually involved in the chemical reaction. For example the net ionic equation of solutions of potassium bromide and silver nitrate is following:

Part 1

According to the image the sodium sulfate is poured out from graduated cylinder because the size of sulfate ion is greater than chloride ion.

Part 2

The balance equation for barium chloride and sodium sulfate which gives solid or insoluble barium sulfate with soluble sodium chloride is as follows:

The formula of barium sulfate is which form from barium and sulfate ion is.

Part 3

The molecular equation of barium chloride and sodium sulfate which gives solid or insoluble barium sulfate with soluble sodium chloride is as follows:

In the above equation; is present as solid form which will not ionize. Others are ionic compound and strong electrolyte which will present as ions in the solutions.

Hence the ionic equation is as follows:

Therefore the net ionic equation is written as follows:

And simply net ionic equation, which will not show the ions present both side; is written as follows:

Ans: Part 1

Thus, sodium sulfate is poured out from graduated cylinder.

Part 2

Thus, the cation is and anion is .

Part 3

Thus, the net ionic equation is .