Multiple Choice
Which of the following best describes the charge of a cation?
2. Atoms & Elements
Ions
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Which of the following ions is most likely to be leached from soil due to its high solubility and low tendency to adsorb to soil particles?
A
NH4+
B
Fe3+
C
NO3-
D
PO4^{3-}
Verified step by step guidance1
Understand that leaching refers to the process where ions are washed away from the soil by water movement, which depends on the ion's solubility and its interaction with soil particles.
Recognize that ions with high solubility and low adsorption to soil particles are more likely to be leached because they remain dissolved in water and do not bind strongly to soil.
Consider the charge and chemical nature of each ion: cations like NH4+ and Fe3+ tend to adsorb to negatively charged soil particles, reducing their leaching potential.
Anions such as NO3- and PO4^{3-} generally have different behaviors; NO3- is highly soluble and does not adsorb strongly to soil, making it prone to leaching.
PO4^{3-} tends to bind strongly to soil particles due to its high charge and affinity for soil minerals, so it is less likely to be leached compared to NO3-.
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