Question

What is the pH of a saturated strontium hydroxide solution?

Answer 1

Strontium hydroxide is a base and thus the solution of strontium hydroxide is also a base.

pH scale ia a scale which is used to specify either acidity or basicity of an aqueous solution.

If we go through the basic definition and concept of pH we know that, any H⁺ ion concentrations or the acids show the pH in the range of 0 to less than 7 on the pH scale. From 0-7 colors are alloted to some part of the pH scale and from that, rough idea of pH is obtained when we use pH paper and there is a color change. However, pH metres give a sensible annd accurate value of the pH.

At pH 7, the compound is said to be neutral. (i.e. neither acidic, nor basic).

In the pH scale, any concentration of hydroxide ions (OH^-), is known if the pH range is from more than 7 till 14. The solution in this case is said to alkaline (basic). In this case also, colours are alloted in the pH scale so as to get a rough idea of pH.

Incase of Strontium hydroxide solution, which is saturated solution, there are a huge number of the hydroxide ions and thus because of the presence of many hydroxides, the solution will be more basic. Hence the pH of this solution will be somewhere around 12-14 (not exactly).

NOTE: Saturated means after dissolving a compound in certain amount of solvent (mostly water), any further addition of the compound doesn't dissolve.