Answer:
1.58×10¯⁷ M.
Step-by-step explanation:
From the question given above, the following data were obtained:
pH = 6.8
Concentration of hydronium ion [H₃O⁺] =?
The pH of a solution is given by the following equation:
pH = –Log [H₃O⁺]
With the above formula, we can obtain the concentration of hydronium ion [H₃O⁺] as follow:
pH = 6.8
Concentration of hydronium ion [H₃O⁺] =?
pH = –Log [H₃O⁺]
6.8 = –Log [H₃O⁺]
Multiply both side by by –1
–6.8 = Log [H₃O⁺]
Take the anti log of –6.8
[H₃O⁺] = antilog (–6.8)
[H₃O⁺] = 1.58×10¯⁷ M
Therefore, the concentration of hydronium ion [H₃O⁺] in the solution is 1.58×10¯⁷ M.