• A group of students measured the pH of some substances they found in their homes. Their results are given in the following table:
Substance pH
Apples Baking soda Black coffee
Household ammonia Lemon juice
Milk Salt Sugar
Toothpaste Vinegar Washing soda 3.0
8.5
5.0
12.0
2.5
6.5
7.0
7.0
9.0
3.0
11.5
(a) What would the students have used to measure the pH ?
(b) Which solution is the most acidic?
(c) Which solution is the most alkaline?
(d) Which solutions are neutral?
(e) Which solution can be used to treat wasp stings?
Which solution can be used to treat bee stings?

Question

•	A group of students measured the pH of some substances they found in their homes. Their results are given in the following table:
Substance	pH
Apples Baking soda Black coffee
Household ammonia Lemon juice
Milk Salt Sugar
Toothpaste Vinegar Washing soda	3.0
8.5
5.0
12.0
2.5
6.5
7.0
7.0
9.0
3.0
11.5
(a)	What would the students have used to measure the pH ?
(b)	Which solution is the most acidic?
(c)	Which solution is the most alkaline?
(d)	Which solutions are neutral?
(e)	Which solution can be used to treat wasp stings?
Which solution can be used to treat bee stings?

MyClass24 · Accepted Answer

To measure the pH universal indicator is used which is having different colours identifying pH from 0 to 14.
pH 5 Lemon juice is the most acidic which is less than 7
Household ammonia with pH 12 is the most alkaline
Salt solution and sugar solution are neutral having pH
To treat wasp stings vinegar the weak acid can be used as the wasp sting injects alkaline liquid to the
Baking soda being a base can be used to neutralize the acid which is caused due to the bee It injects methanoic acid to the skin.