Which ion is produced by alkalis in solution?

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Multiple Choice

Which ion is produced by alkalis in solution?

Explanation:
When alkalis dissolve in water, they release hydroxide ions. This is what makes the solution alkaline: the presence of OH− increases the pH. For example, sodium hydroxide dissociates into Na+ and OH−. The ion that characterizes an alkali in solution is the hydroxide ion, OH−, not H+, which comes from acids, nor the spectator cations Na+ or K+. So the hydroxide ion is the produced species in solution by alkalis.

When alkalis dissolve in water, they release hydroxide ions. This is what makes the solution alkaline: the presence of OH− increases the pH. For example, sodium hydroxide dissociates into Na+ and OH−. The ion that characterizes an alkali in solution is the hydroxide ion, OH−, not H+, which comes from acids, nor the spectator cations Na+ or K+. So the hydroxide ion is the produced species in solution by alkalis.

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