The following chart provides the pH of some common foods. How many would be considered basic? food pH food pH tofu 7.20 tomatoes 4.50 walnuts 5.42 apples 3.50 asparagus 6.50 blueberries 3.15 cranberry juice 2.40 egg white 7.96 egg yolk 6.10 concord grapes 2.80 none 1 2 5