What are the concentrations of hydroxide and hydronium ions in a solution with a ph of 8.3?
2.9 × 10–5 m h3o+ and 3.4 × 10–10 m oh–
3.1 × 10–6 m h3o+ and 3.2 × 10–9 m oh–
5.0 × 10–9 m h3o+ and 2.0 × 10–6 m oh–
6.3 × 10–11 m h3o+ and 1.6 × 10–4 m oh–

The hydroxide concentration is 2*10^-6 M

The hydronium concentration is 5*10^-9 M

Explanation:

Step 1: Data given

pH = 8.3

Step 2: Calculate [H+]

pH = 8.3 = -log [H+]

[H+] = 10^-8.3 = 5*10^-9 M

[H+] = [H3O+] = 5*10^-9 M

Step 3: Calculate pOH

pH + pOH = 14

pOH = 14 -pH = 14 - 8.3 = 5.7

Step 4: Calculate concentration of hydroxide

pOH = -log [OH-] = 5.7

[OH-] = 10^-5.7 = 2*10^-6 M

The hydroxide concentration is 2*10^-6 M

The hydronium concentration is 5*10^-9 M

for points guys

the ratio of the conjugate base to the acid required to attain the desired ph.