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Which ion is found in a glass of water?

A. [tex]N^{+}[/tex]

B. [tex]O^{-}[/tex]

C. [tex]O_2[/tex]

D. [tex]H^{+}[/tex]

Sagot :

GinnyAnswer
To determine which ion is commonly found in a glass of water, it’s important to understand the nature of water dissociation.

1. Water ([tex]\( H_2O \)[/tex]) can dissociate into two types of ions. This process of dissociation involves splitting a water molecule into positive and negative ions.
2. The equation for the dissociation of water is:
[tex]\[ H_2O \leftrightarrow H^+ + OH^- \][/tex]
Here, [tex]\( H_2O \)[/tex] dissociates into a hydrogen ion ([tex]\( H^+ \)[/tex]) and a hydroxide ion ([tex]\( OH^- \)[/tex]).

From this dissociation process, we see that the ions formed from water are [tex]\( H^+ \)[/tex] and [tex]\( OH^- \)[/tex].

Given the options:
- A. [tex]\( N^+ \)[/tex] is not associated with water dissociation.
- B. [tex]\( O^- \)[/tex] is not typically found as a dissociation product of water.
- C. [tex]\( O_2 \)[/tex] is a molecule of oxygen and not an ion, also not a product of water dissociation.
- D. [tex]\( H^+ \)[/tex] is indeed one of the ions produced when water dissociates.

Based on these points, the ion found in a glass of water is [tex]\( H^+ \)[/tex].

Therefore, the correct answer is:
D. [tex]\( H^+ \)[/tex]
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