# Environmental Chemistry

Chemistry Level 2

The $$\ce{pH}$$ of a substance is the concentration $$[\ce{H}^+]$$, measured in moles of $$\ce{H} ^+$$ per liter of substance. It is given by the formula $$\ce{pH} = \log_{10} \frac {1}{[\ce{H}^+]}$$.

Find the concentration in moles per liter of hydrogen ion in a liter of acid rain that has a $$\ce{pH}$$ of 4.5.

×