measurements using the pH meter and the pH paper? Compare the initial pH and the final pH of each sample. What was the most effective buffer? What was the least effective? Solución pH inicial pH final Diferencia water 7.45 2.48 0.1 M NaCl
Essential nutrients
These are the organic compounds present in the food that provide nourishment essential for the development and growth of our body. Nutrients not only provide us with the required energy to carry out various biological processes but are also the building blocks for repair and growth in our bodies.
Vitamins
The vitamins are organic molecules required in low concentration for the proper functioning of the body. They cannot be generated in the organism and are taken into the body through the diet. The lack of proper vitamins results in diverse deficiency disorders. They are thus called essential nutrients. The important vitamins are vitamin A, vitamin B complex, vitamin C, vitamin D, vitamin K, and vitamin E.
Is there a difference between pH measurements using the pH meter and the pH paper?
Compare the initial pH and the final pH of each sample. What was the most effective buffer? What was the least effective?
|
Solución |
pH inicial |
pH final |
Diferencia |
|
water |
7.45 |
2.48 |
|
|
0.1 M NaCl |
7.28 |
2.03 |
|
|
milk |
6.78 |
6.45 |
|
|
buffer de fosfato |
8.76 |
7.78 |
|
**** Calculate the difference (subtract) the initial pH - final pH values to identify the effectiveness of each solution as a buffer. Values with little difference mean that a less drastic change occurred and are therefore more effective. On the contrary, values by much difference reflect drastic changes in pH and are less effective.
What do buffers do and why are they important in biological systems?
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