What is the concentration of the hydroxide ion in a solution if 0.12 mol of strontium hydroxide are dissolved in water and the final solution volume is 500. mL?
To find the concentration of the hydroxide ion in the solution, you need to calculate the molarity (M) of the hydroxide ion. Molarity is defined as the number of moles of solute divided by the volume of the solution in liters.
First, convert the volume of the solution to liters:
500 mL = 500/1000 = 0.5 L
Next, calculate the molarity of the hydroxide ion using the given moles of strontium hydroxide:
Molarity (M) = moles of solute / volume of solution (in liters)
moles of strontium hydroxide = 0.12 mol
volume of solution = 0.5 L
Molarity (hydroxide ion) = 0.12 mol / 0.5 L
Molarity (hydroxide ion) = 0.24 M
So, the concentration of the hydroxide ion in the solution is 0.24 M.