More than 7
1 x 104
2.5 x 10-2
The higher the pH, the greater the concentration of Hydroxide (OH-) ions. So, the solution with the pH of 9 is your answer.
None. In a solution with a pH of 7 the hydrogen ion concentration is equal to the hydroxide ion concentration.
pH 2
1 x 104
2.5 x 10-2
The higher the pH, the greater the concentration of Hydroxide (OH-) ions. So, the solution with the pH of 9 is your answer.
No, sodium hydroxide (NaOH) does not have a pH of 7. Sodium hydroxide is a strong base and has a pH greater than 7. The pH of a solution of sodium hydroxide depends on its concentration. A 0.1 M solution of NaOH has a pH of 13.
< 7
None. In a solution with a pH of 7 the hydrogen ion concentration is equal to the hydroxide ion concentration.
Sodium hydroxide does not have a pH number. The pH of a solution of sodium hydroxide depends entirely on the concentration of it in that solution. To learn how to determine the pH of a sodium hydroxide solution, see the Related Questions links.
pH 2
Acidic
No, the pH is the negative logarithim to base 10 of the Hydrogen Ion concentration.
In this case the pH increase over 7.
The concentration of hydroxide ion is realted to pH by the pKw (10-14) At pH 9 the concentration of OH- is 10-5, at pH 3, 10-11. The ratio is 106 so there are a million times as many OH- in pH 9.