Respuesta :
the substance with pH are basic, so correct answer is C) more OH- ions than H30+ ions.
Answer: The correct option is C.
Explanation: pH scale is the logarithmic scale which determines the acidity or basicity of the solution. It is basically the power of Hydrogen or hydronium ions in a solution. pH scale ranges from 0-14.
Acidic scale is from 0-6.9, basic scale ranges from 7.1-14 and neutral pH is 7.
Mathematically,
[tex]pH=-\log[H^+]\text{ or }-\log[H_3O^+][/tex]
More the concentration of hydronium ions, less will be the pH of the solution and more acidic will be the solution.
Less the concentration of hydronium ions, more will be the pH of the solution, less acidic will be the solution. The solution will be basic in nature.
If the solution is basic, more will be [tex]OH^-[/tex] concentration in the solution and vie-versa.
We are given a solution of pH = 9, which means that the solution has less hydronium ion concentration and more hydroxide ion concentration.
Hence, the correct option is C.
