Answer:
1.) [H⁺] = 2.69 x 10⁻⁹
2.) [H⁺] = 6.61 x 10⁻⁶
3.) [H⁺] = 5.01 x 10⁻²
Step-by-step explanation:
The [H⁺] in a solution can be found using the following equation:
[H⁺] = 10^(-pH)
Therefore, you can plug the given pH into the equation and solve for the hydrogen ion concentration ([H⁺]).
1.) pH 8.57
[H⁺] = 10^(-pH)
[H⁺] = 10^(-8.57)
[H⁺] = 2.69 x 10⁻⁹
2.) pH 5.18
[H⁺] = 10^(-pH)
[H⁺] = 10^(-5.18)
[H⁺] = 6.61 x 10⁻⁶
3.) pH 1.30
[H⁺] = 10^(-pH)
[H⁺] = 10^(-1.30)
[H⁺] = 5.01 x 10⁻²