A milk man adds a very small amout of baking soda to fresh milk . why does the ph of the fresh milk from 6 to slightly alkaline? what do youexpect to observe when milks come to boil?
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As fresh milk pH is 6 which is slightly acidic in nature.To prevent milk from souring(spoiling) , milkman adds small amount of baking soda too fresh milk .By doing so , he shifts the milk pH to above 7 that is slightly alkaline.
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Answer:
Becoz baking soda is a base which reacts with acids and neutralizes it. This prevents milk from getting sour and keeping it fresh for long time . So ,pH changes from 6+o 4.5-5.5
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