The pH of a substance equals (-log[H⁺]) where ([H⁻]) is the concentration of hydrogen ions, and it ranges from 0 to 14 . A pH level of 7 is neutral. A level greater than 7 is basic, and a level less than 7 is acidic. The table shows the hydrogen ion concentration (-log[H⁺]) for selected foods. Is each food basic or acidic?How can you find the pH value of each food?