Which of the following correctly lists the substances from highest to lowest pH?
A.
lemon juice, distilled water, milk of magnesia
B.
distilled water, milk of magnesia, lemon juice
C.
lemon juice, milk of magnesia, distilled water
D.
milk of magnesia, distilled water, lemon juice
B. distilled water, milk of magnesia, lemon juice
To determine the correct order of substances from highest to lowest pH, we need to understand that pH measures the acidity or alkalinity of a substance on a scale of 0 to 14. A pH value below 7 indicates acidity, 7 is neutral, and values above 7 indicate alkalinity.
Now, let's analyze each option:
A. lemon juice, distilled water, milk of magnesia
B. distilled water, milk of magnesia, lemon juice
C. lemon juice, milk of magnesia, distilled water
D. milk of magnesia, distilled water, lemon juice
Lemon juice is known to be acidic, so it will have a pH below 7. Distilled water is neutral and has a pH of 7. Milk of magnesia is an antacid that is more alkaline and will have a pH above 7.
Comparing the options, we can see that option C, lemon juice, milk of magnesia, distilled water, correctly lists the substances from highest to lowest pH.
To determine the correct order of substances from highest to lowest pH, we need to understand that pH is a measure of how acidic or basic a substance is. The pH scale ranges from 0 to 14, with 7 being neutral. A pH below 7 indicates acidity, while a pH above 7 indicates alkalinity or basicity.
To solve this question, we need to know the typical pH ranges for the substances given.
Lemon juice is known for its acidic properties, so it has a low pH. The pH of lemon juice generally ranges from 2 to 3.
Distilled water is considered neutral with a pH of 7. It does not contain any significant amount of acidic or basic compounds.
Milk of magnesia is an antacid, which means it has a high pH and is basic. The pH of milk of magnesia typically ranges from 10.5 to 11.5.
Comparing the given options:
A. lemon juice, distilled water, milk of magnesia
B. distilled water, milk of magnesia, lemon juice
C. lemon juice, milk of magnesia, distilled water
D. milk of magnesia, distilled water, lemon juice
Looking at the pH ranges of the substances, we can conclude that the correct answer is option B: distilled water, milk of magnesia, lemon juice.