(i) What is meant by the pH of a substance?
(ii) State the pH values you would expect for
1 - Leaving Cert Agricultural Science - Question d - 2010
Question d
(i) What is meant by the pH of a substance?
(ii) State the pH values you would expect for
1. Sour milk
2. The contents of the rumen.
3. The contents of the abomasum... show full transcript
Worked Solution & Example Answer:(i) What is meant by the pH of a substance?
(ii) State the pH values you would expect for
1 - Leaving Cert Agricultural Science - Question d - 2010
Step 1
What is meant by the pH of a substance?
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The pH of a substance refers to the measure of its acidity or alkalinity on a scale from 0 to 14. It indicates the concentration of hydrogen ions (H+) in a solution, where a lower pH value represents higher acidity, a pH of 7 denotes neutrality, and a higher pH indicates alkalinity. Thus, the pH scale helps to categorize substances as acidic (pH < 7), neutral (pH = 7), or basic (pH > 7).
Step 2
State the pH values you would expect for
1. Sour milk
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
For sour milk, the expected pH value is around 4 to 5, indicating its acidic nature due to lactic acid production during fermentation.
Step 3
State the pH values you would expect for
2. The contents of the rumen.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The contents of the rumen typically have a pH around 6 to 7, indicating a neutral to slightly alkaline environment, which is suitable for the fermentation processes carried out by microbes.
Step 4
State the pH values you would expect for
3. The contents of the abomasum.
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The contents of the abomasum usually have a pH around 2, which is highly acidic. This acidity aids in the digestion of food and the activity of digestive enzymes.
Join the Leaving Cert students using SimpleStudy...
