The correct answer is "Blood should not be written on the table. Blood is basic".
- Solutions are ranked according to their acidity or basicity (alkalinity) using the pH scale.
- The scale is logarithmic since it is based on pH values, which means that a change of 1 pH unit corresponds to a ten-fold change in the concentration of H+ ions.
- The pH scale is frequently stated to range from 0 to 14, while it is conceivable to have a pH below 0 or over 14. Most solutions however fall within this range.
- Acidic substances have a pH value less than 7 while alkaline or basic substances have a pH value greater than 7. A pH value of 7 is said to be neutral.
- In the example, orange juice, vinegar and hydrochloric acid have pH values less than 7. Hence, these are acidic substances.
- However, since blood has a pH of 7.4, it is considered as slightly basic.
Therefore, the best choice is "Blood should not be written on the table. Blood is basic".
Learn more about pH scale here:
https://brainly.com/question/1433865
#SPJ9
