The pH scale goes from 0 to 14 with pH 7 as the neutral point ... However, a slightly alkaline (pH 7.4-7.8) or higher pH soil can cause a problem with the availability of iron to pin oak and a few ...

The pH scale measures how strongly acidic or alkaline ... This indicates a pH value of 7 and tells us that water is neither alkaline or acid, but neutral. Acidic solutions have pH values less ...