Question

Question #4221a

Answer 1

The answer is (2) P with R

Explanation:

A neutralization reaction is said to take place when an acid reacts with a base to produce salt and water.

Now, acidic substances have a pH that's lower than 7 and basic substances have a pH that's greater than 7.

A substance that has a pH of 7 is said to be neutral.

So, your substances have the following pH values

`P -> 12.4`
`Q -> 7`
`R -> 1.1`
`S -> 10.3`

Right from the start, substance `Q` is eliminated because it is neutral. Likewise, a possible reaction between `P` and `S` will not be classified as aneutalization reaction because both of these substance are basic, i.e. their pH is greater than 7.

The only option given to you that will produce a neutralization reaction is option (2), in which `P`, a basic substance, reacts with `R`, an acidic substance.

This reaction will result in the production of salt and water.