pH Review

Why does hydronium have a positive charge?

• The H is an electron, so now the H2O has an extra electron.

• The H is missing an electron, so it has a positive charge.

• The H is a proton, so now the H2O has an extra proton compared to electrons.

• H2O lost an electron when the H came over.

We think of pH as the concentration of H+ in a solution. This is the same as the concentration of ______.

• H2O

• H3O+

• H+

• OH-

At a low pH there is a _____ concentration of OH-

• High

• Low

At a low pH, there is a ______ concentration of H+

• High

• Low

At a high pH, there is a _____ concentration of H+

• High

• Low

Basic solutions have a lot of ____.

• H+

• OH-

• H3O

• H2O

Acidic solutions have a lot of _____.

• H+

• H3O+

• OH-

• H2O