Fresh milk has a pH of 6. How do you think the pH will change as it turns into curd? Explain.

AcademicChemistryNCERTClass 10

The pH will change to below 6, as lactic acid is formed when milk turns into curd.

(Refer to image for better understanding)
[Extra information: pH stands for "power of hydrogen".The "H" is capitalized because it is the hydrogen element symbol. 
Acidic and basic are two extremes that describe a chemical property chemical. The pH scale measures how acidic or basic a substance is. 
  • The pH scale ranges from 0 to 14.
  • A pH less than 7 is acidic in nature.
  • A pH of 7 is neutral.
  • A pH greater than 7 is basic in nature.
pH decreases with an increase in temperature. This does not mean that the water becomes more acidic at higher temperatures. A solution is considered acidic if there is an excess of hydrogen ions (H) over hydroxide ions (OH-).]
Updated on 10-Oct-2022 12:46:29