A solution at 25 C has a hydroxide ion concentration equal to 1.0 x 10-10 M. What is the [H+] of this solution?
A. 1.0 x 10-4 M
B. 1.0 x 104M
C. 1.0 x 101.4M
D. 1.0 x 10-24M

Question

A solution at 25 C has a hydroxide ion concentration equal to 1.0 x 10-10 M. What is the [H+] of this solution?
A. 1.0 x 10-4 M
B. 1.0 x 104M
C. 1.0 x 101.4M
D. 1.0 x 10-24M

anonymous · Answer

To find the concentration of the H+ ions in a solution, we do [H+] = Kw/[OH-], so in this case we would do 1*10^-14/1*10^-10 = 1*10^-4, or answer a.

fifib · Answer

@nmagnuson Thankyou for the help :)