Exam 1: Acids & pH

Question 1

pH represents…

Answer 1

concentration of H+ ions in a solution w/ respect to the scale of acidity level

pH: [H+]

Question 2

pH scale (acid, neutral, basic/alkaline)

Answer 2

0-6: acidic
7: neutral
8-14: basic
H+ most at 0 & lowers as numbers go higher

Question 3

importance of pH in food:

Answer 3

(1) trigger reactions
(2) influence flavor
(3) preservation
- lowers microbial activity when acidic

Question 4

pH for foods

Answer 4

lemon juice: 2-3

soda: 2-3
milk: 6