Write a short note on pH

  • Ph is a measure of how acidic or basic is an aqueous solution.
  • It is measured in terms of hydrogen ion concentration in the solution.
  • The pH values range from 0 to 14. The values less than 7 represent an acidic solution, above 7 indicates a basic solution and 7 is neutral.
  • The pH scale measures how acidic or basic a substance is, ranging from 0 to 14. The pH and organic acid content of foods are two significant factors that may determine not only the types of organisms that will survive during storage but also their activities as spoilage organisms.
  • Acid-base indicators are substances (dyes) which change color with pH. The pH scale shows the range of strengths of acids and alkalis.

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