Answer:
a.) pH = 3.62
b.) pOH = 10.38
c.) [OH⁻] = 4.17 x 10⁻¹¹
Step-by-step explanation:
The hydronium ion concentration can be represented by the symbol: [H₃O⁺]. The hydroxide ion concentration can be represented by the symbol: [OH⁻].
a.) The pH of a solution represents the hydrogen (hydronium) ion concentration. It can be calculated using the following formula:
pH = -log[H₃O⁺]
Since you have been given the hydronium concentration, you can easily find the pH.
[H₃O⁺] = 2.4 x 10⁻⁴
pH = -log[2.4 x 10⁻⁴]
pH = 3.62
b.) The pOH of a solution represents the hydroxide concentration. It measures the opposite of the pH measurement. Since the pH range goes up to 14, you can find the pOH using the following formula:
pOH + pH = 14
Since you now know the value of the pH, you can plug it into the formula to find the pOH.
pOH + 3.62 = 14
pOH = 10.38
c.) You can find the hydroxide concentration using the following formula:
[OH⁻] = 10^-pOH
Since you now know the value of the pOH, you can plug it into the formula to find the hydroxide concentration.
[OH⁻] = 10⁻¹⁰°³⁸
[OH⁻] = 4.17 x 10⁻¹¹