Which one of the following solutions will have the greatest concentration of hydroxide ions?
A)1.10 M rubidium hydroxide
B)0.368 M calcium hydroxide
C)0.368 M ammonium hydroxide
D)0.368 M potassium hydroxide
E)0.368 M sulfuric acid

Question

Quizplus · Accepted Answer

Rubidium hydroxide is a strong base and fully dissociates in water to give rubidium cations and hydroxide anions. Therefore, a 1.10 M solution of rubidium hydroxide will have the greatest concentration of hydroxide ions among the given choices. Calcium hydroxide, ammonium hydroxide, and potassium hydroxide are also strong bases but have lower molarities, while sulfuric acid is an acid and does not contain hydroxide ions.

Which One of the Following Solutions Will Have the Greatest