I think the reason is the rotten milk has become acid..
Moreover, rotten milk is sour..
but milk is an acid liquid
it pH is 6
Ooh ya..
If you know please tell me..
Jawapan Paling Bijak!
Rotten milk contains microorganism,dust and water vapor. The combination of milk microorganism,dust and water vapor make the milk acidic. So that's why the rotten milk has lower pH level
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