DRAW IT Draw a simple sketch of cation exchange, showing a root h...

Question

DRAW IT Draw a simple sketch of cation exchange, showing a root hair, a soil particle with anions, and a hydrogen ion displacing a mineral cation.

Accepted Answer

Hello everyone. And in today's video we have the following problem. What happens to the ph of soil after a cat ion exchange? And this is referring to plants? And so let's be quickly reminded what a cat ion exchange is before we jump into solving this problem. So, according to the graphic that we have here, a cat ion exchange is a process that occurs in the roots of plants, where cat ions or nutrients inside of the plants are attracted to court excels and then they are expelled outside into the soil from the roots. So what's going to happen because of this is that the hydrogen ion concentration of the soil is going to increase. So let's be quickly reminded also of the effect of the hydrogen iron concentration into the ph And we have that the ph of any medium is equal to the negative log of the hydrogen ion concentration. So now this is very strange to visualize. So let's create an easier way that we can relate the two values we have that the hydrogen ion concentration of any medium is inversely related to the ph of that medium. So what this means is as this hydrogen ion concentration increases the ph of that medium is going to decrease. As we can see here, the hydrogen iron in the soil increases from this car ion exchange from the expulsion of these hydrogen ions from the roots. And so what's going to happen to the ph is that it's going to decrease, which correlates with answer choice A and that is our final answer. A decrease in the ph of the soil will take place from an increase in the presence of the hydrogen ion concentration, making that soil more aesthetic. So thank you very much for sticking around until the end of this video. I really hope it helped you.

Watch next