Assume that an aqueous solution of a cation, represented as a red sphere, is allowed to mix with a solution of an anion, represented as a yellow sphere. Three possible outcomes are represented by boxes (1)–(3):
Which outcome corresponds to each of the following reactions? (a) 2 Na+(aq) + CO32-(aq) S (b) Ba2+(aq) + CrO42-(aq) S (c) 2 Ag+(aq) + SO32-(aq) S

Question

Assume that an aqueous solution of a cation, represented as a red sphere, is allowed to mix with a solution of an anion, represented as a yellow sphere. Three possible outcomes are represented by boxes (1)–(3):

Two boxes showing blue spheres for cations and green spheres for anions in aqueous solutions.

Which outcome corresponds to each of the following reactions? (a) 2 Na+(aq) + CO32-(aq) S (b) Ba2+(aq) + CrO42-(aq) S (c) 2 Ag+(aq) + SO32-(aq) S

Accepted Answer

Hello, everyone. Today, we have the following problem shown below are the solutions of Acadian in blue spheres and an an ion in green spheres that were allowed to mix together, which outcome represents a precipitation reaction. So first, let's define what happens in a pris precipitation reaction. In this sort of reaction, we're going to have dissolved reactant, so dissolved reactions that form a solid. And so the nature of a solid is we're going to have very tightly packed molecules that tend to settle at the bottom. So they're going to settle at the bottom of the tank or whatever mixture container that we have. So if we look at answer choice, a these ions did not seem to react at all and that they're just mixed. So this is not gonna be precipitation. If we look at B, it looks like some of them did react. However, they didn't form a solid product. It still looks like they're sort of in the gas in the liquid phase. If we look at C C is going to be our answer because the ions reacted and they settled at the bottom and they're tightly packed, which is indicative of a solid. And so C is going to be our answer. And if you look at D once again, like be they reacted, but they just didn't form that tightly packed solid that we were looking for. And so C is going to be our overall answer overall. I hope this helped and until next time.

Verified Solution

Key Concepts

Ionic Compounds and Precipitation Reactions

Solubility Rules

Chemical Equation Representation