Question

Which phrase describes a characteristic of an Arrhenius base?

Answer 1

 The phrase  that describes a   characteristic   of an Arrhenius base is  that Arrhenius  base add  hydroxide  ions  to  the solution ( answer C)

 

      Explanation

Arrhenius base  is a substance that  increases  the concentration  of OH-  in aqueous  solution.

The Common Arrhenius base are  group 1 and  2 hydroxide  such as LiOH, NaOH ,  Ba(OH)2  among others.  

for  example  NaOH  dissociate  as follows , NaOH  →  Na+(aq) + OH- (aq)

Answer 2

Answer: Option (C) is the correct answer.

Explanation:

According to Arrhenius, bases are the species which when dissolved in water will give hydroxide ions, that is, $OH^{-}$.  

For example, $NaOH \rightarrow Na^{+} + OH^{-}$

So, NaOH is a base.

On the other hand, species which tend to dissociate in water to given hydrogen ions, that is, $H^{+}$ ions are known as acids.

For example, $HCl \rightarrow H^{+} + Cl^{-}$

So, HCl is an acid.

Thus, we can conclude that the phrase adds hydroxide ions to the solution best  describes a characteristic of an Arrhenius base.