A 350 mL saturated solution of magnesium hydroxide, Mg(OH)2 is prepared at 25 degrees Celsius. The solubility product constant, Ksp, for Mg(OH)2 is 1.8 x 10^-11 at 25 degrees Celsius.
1) Find the molar solubility of Mg(OH)2 at 25 degrees Celsius?

2) What is the concentration (mol/L) of hydroxide ion, OH-, in the saturated solution at 25 degrees Celsius?

For 1: The solubility of magnesium hydroxide at 25°C is

For 2: The concentration of hydroxide ion in the saturated solution at 25°C is

Explanation:

The equation for the ionization of the magnesium hydroxide is given as:

                                    s            2s

Expression for the solubility product of will be:

We are given:

Putting values in above equation, we get:

Hence, the solubility of magnesium hydroxide at 25°C is

Concentration of hydroxide ion in the solution = 2s =

Hence, the concentration of hydroxide ion in the saturated solution at 25°C is

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

the term hydride is commonly named after binary compounds that hydrogen forms with other elements of the periodic table. hydride compounds in general form with almost any element, except a few noble gases. the trends and properties vary according to the type of intermolecular force that bonds the elements together, the temperature, its molecular masses, and other components. hydrides are classified into three major groups, depending on what elements the hydrogen bonds to. the three major groups are covalent, ionic, and metallic hydrides. formally, hydride is known as the negative ion of a hydrogen, h-, also called a hydride ion. because of this negative charge, hydrides have reducing, or basic properties. its special characteristics will be further discussed.

explanation: