. . . is noticeably more acidic that the solution of pH 6.
That depends on the amount of each that is mixed and on the ionization of each.
slightly basic.
probaly twelve
ph6
pH4+pH8=
ph4
alot
Ph3 -ph4
Phosphate
pH is an agreed scale of acidity. It has a range of 14 steps with pH7 being 'neutral'. I.E. neither acid or alkaline. Therefore pH6, being one step less than pH7 is acidic. pH 8, being one step greater than pH7 is alkaline.
To create a solution with a pH of 4 using vinegar, you can mix approximately 1 part vinegar with 10 parts water.
it turns ph8
ph4
alot
Ph3 -ph4
EDTA is dissolved only at pH8. EDTA serves as an important chelating agent to kill the contaminating DNAses. Also this is close to the physoological pH which is pH7.
Any thing above a pH of 7 is considered a basic solution.
pepsin is activated from pepsinogen in stomach. the pH range for its optimal ativity is at acidic pH between 1.5 to 2. It is also stable upto pH8 and can be inactivated at basic pH from 8.5,
Turmeric is worth a try. It turns from yellow to red around ph8
The pH goes lower in sour milk. See Related Links.
it depends. for most fish it should be pH7-pH8 but some species like it at pH6
You can learn the PH of a drink by adding the special indicator and it turns to a specific colour if it is red yellow or orang then it is a PH0 to a PH6 if it is grenn then it is a PH7 if it is a purple blue or navy colour then it is a PH8 to 14