Question

A group of students measured the pH of some substances they found in their homes. Their results are given in the following table :

(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 ?
(f) Which solution can be used to treat bee stings ?

Lakhmir Singh Chemistry Class 10

Answer 1

Answer:

a)used the pH scale

b)venigar

c)salt

d)water

Answer 2

Refer for the attachment for the table:

(a) What would the students have used to measure the pH ?

Students would have used universal indicator

(b) Which solution is the most acidic

among the following samples , most acidic is lemon juice with pH=2.5

(c) Which solution is the most alkaline ?

House hold ammonia with pH = 12 is most basic

(d) Which solutions are neutral ?

salt solution and sugar solution are neutral samples.

(e) Which solution can be used to treat wasp stings ?

As wasp stings inject base so we can use weak acid like vinegar to neutralize

(f) Which solution can be used to treat bee stings ?

Honey bee sting injects acid, so to neutralize it we may use mild base like baking soda