SOLUTION: find the hydrogen ion concentration of a saturated solution of calcium hydroxide whose pH is 10.9. please give the answer in the form {{{a*10^-x}}} where a is rounded to the neares

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: find the hydrogen ion concentration of a saturated solution of calcium hydroxide whose pH is 10.9. please give the answer in the form {{{a*10^-x}}} where a is rounded to the neares      Log On


   

Question 1103920: find the hydrogen ion concentration of a saturated solution of calcium hydroxide whose pH is 10.9. please give the answer in the form a%2A10%5E-x where a is rounded to the nearest hundredth.
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
Let M be the concentration of Hydrogen ions, as MOLES per LITER.
pH=10.9=-log%2810%2CM%29

This means, 10%5E%28-10.9%29=M.
You could now just use a calculator to find this.

M=1.26%2A10%5E%28-11%29