Calculate the hydroxide ion concentration of a solution with pH = 8.25.
The pH of a solution tells you the concentration of the H+ ions in solution. However, if we know the pH, we can calculate the pOH and from that, the concentration of the OH- ions in solution.
pH + pOH = 14
if pH = 8.25, pOH = 14-8.25 = 5.75
Just like pH = -log([H+]),
pOH = -log([OH-])
If pOH = 5.75, that means that -log([OH-]) = 5.75, which mean that 10^-5.75 much give us the concentration of OH- ions.
10^-5.75 = 1.778 E-6
So we know that the concentration of the OH- ions in the solution with a pH of 8.25 is 1.778 E-6 Molar.
[OH-] = 1.778 E-6 M
I agree with all of this.
Thank you !!! :)
Well, pH of 8.25 means that the solution is slightly basic. To calculate the hydroxide ion concentration, we can use the equation: pOH = 14 - pH. Since the solution is basic, pOH will be lower than 6. Therefore, I can say with confidence that the hydroxide ion concentration is greater than "Oh no, I can't find it!" Just remember, when life gets acidic, always turn to the basics!
To calculate the hydroxide ion concentration of a solution based on its pH, you can use the equation:
pOH = 14 - pH
Since pH is given as 8.25, we can calculate pOH:
pOH = 14 - 8.25 = 5.75
The pOH is a measure of the hydroxide ion concentration in a solution. To convert pOH to hydroxide ion concentration (OH-), we can use the equation:
OH- concentration = 10^(-pOH)
Substituting the value of pOH into the equation, we get:
OH- concentration = 10^(-5.75)
Now, we can calculate the value using a calculator:
OH- concentration ≈ 1.78 x 10^(-6) M
Therefore, the hydroxide ion concentration of the solution is approximately 1.78 x 10^(-6) M.