Midterm Exam Questions

Hello, I was just wondering about the relationship between thermal admittance and heat flux, when you have high admittance do you typically see HIGH or LOW heat fluctuations in soil temp?

JoshGreen (talk)‎

Soils with high thermal admittance (e.g., mineral soils) experience limited (or low) surface temperature fluctuations

MajaKrzic (talk)‎

Based on lecture, H and Al ions that contribute to residual acidity are bound on soil particles. Is it possible to exchange those ions? In other words, can they undergo ion exchange reactions?

ChengKuang (talk)‎

H & Al ions that contribute to residual acidity are strongly bonded to the soil particles. There are numerous ways how this strong bonding (much stronger than electrostatic attraction) occurs, but the only one that has been mentioned in this course is bonding in the inetrlayer space of the phyllosilicates. Hence, for those strongly bonded H & AL ions to be exchanged, phyllosilicate will need to weather 1st and then these ions could be exchanged.

MajaKrzic (talk)‎