If the water product is formed with the hydrogen ion from the acids, what ion do the bases donate to form H2O water?

a. OH+
b. OH^–
c. H+
d. H-

b. OH^–

The ion that bases donate to form water (H2O) is the hydroxide ion (OH^-). So the correct answer would be:

b. OH^–

To determine the ion that bases donate to form water (H2O), let's first understand the nature of acids and bases.

Acids are substances that release hydrogen ions (H+) into a solution when they dissolve in water. Bases, on the other hand, are substances that release hydroxide ions (OH-) into a solution.

When an acid and base react with each other, they undergo a neutralization reaction. In this reaction, the hydrogen ion from the acid combines with the hydroxide ion from the base to form water (H2O). The remaining ions from the acid and the base combine to form a salt.

So, in the reaction between an acid and a base to form water, the base donates the hydroxide ion (OH-) to combine with the hydrogen ion (H+) from the acid. This means that the correct answer is:

b. OH^–