Question

Difference between acids and alkali with examples.

Answer 1

An alkali is a base (but it can dissolve in substances)
An acid is completely different its a molecule which is typically corrosive.
Acids have a PH of around 1-6 (1 being a strong acid and 6 being weak) 7 is neutral (water) and 8-14 is an alkali.
8 is weak and 14 is strong 

PH 
1/2 - HCL acid
4/5 - Cola/fizzy drinks
7 - water
8/9 - Milk and soap
10 - 14 - range of cleaning products like DETOL and bleach 

Answer 2

Answer:

Acids are substances with a pH of less than 7. The further down you go on the pH scale, the stronger and more dangerous the acid becomes.

Alkalis are substance with a pH of more than 7. Just like the acids, the further up you go on the pH scale, the stronger and more dangerous the alkali becomes.

There are some substances that are neither acids nor alkalis. Salt and water both have a pH of 7 so that means that they are neutral.

Examples of acids:

Lemon juice: pH of about 2

Tomatoes: pH of 4

Milk: ph of 6.5 so it's very slightly acidic.

Examples of alkalis:

blood: pH of 7.5 it's very slightly alkaline

soap: pH of 10

drain cleaner: pH of 14 so it's VERY strong and it will surely be corrosive