Question

What is the concentration of the hydroxide ions in an acidic solution?

Group of answer choices

0.0 M

1.0 x 10^-7 M

1.0 x 10^-14 M

> 1.0 x 10^-7 M

< 1.0 x 10^-7 M

Answer 1

The concentration of hydroxide ions in an acidic solution is : o 1.0 x 10-7 M [Reason: In an acidic solution, concentration of H+ ions would be higher. The solution would definitely have water. Water is weak electrolyte, but it can dissociate as, H20 (1) + H+(aq) + OH-(aq). Since in acidic solution, no external hydroxide ion is present, the concentration of hydroxide ions in an acidic solution would be same as the concentration of OH-due to the dissociation of H20, which is equal to 10-7 M (for pure water, pOH = 7 = [OH-] = 10-7 M). So, the concentration of hydroxide ions in an acidic solution is 1.0 x 10-7 M).