Let's analyze the question carefully to identify which ion is commonly found in a glass of water.
Water (H₂O) can undergo a process known as dissociation, where it breaks apart into ions. The process of water dissociation is as follows:
[tex]\[ H_2O (l) \rightleftharpoons H^+ (aq) + OH^- (aq) \][/tex]
From this equation, we can observe that water dissociates into two types of ions:
- Hydrogen ion ([tex]\(H^+\)[/tex])
- Hydroxide ion ([tex]\(OH^-\)[/tex])
The hydrogen ion ([tex]\(H^+\)[/tex]) is of particular interest for this question.
Examining the options given:
A. [tex]\(N^+\)[/tex]: Nitrogen ion. This ion is not typically found in pure water.
B. [tex]\(O^-\)[/tex]: Single oxygen ion with a negative charge. This is not a common ion found in water.
C. [tex]\(H^+\)[/tex]: Hydrogen ion. This ion is indeed found in water as a result of the dissociation process.
D. [tex]\(O_2\)[/tex]: Molecular oxygen. Although oxygen can dissolve in water, it is not in the form of an ion and thus not relevant here.
Since we are asked to identify an ion that is commonly found in a glass of water, the correct answer is:
C. [tex]\(H^+\)[/tex]
