Question

The pH values of X, Y, Z three solutions are 13, 6, 2. Then answer the following questions?
i) Which solution is a strong acid ? Why?
ii) Which solution contains ions along with molecules of solution ?
iii) Which solution is strong base ? Why?
iv) What happens to pH value when a base is added to given solution? Why it increases or decreases
Give Reasons ?
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Answer 1

Explanation:

1. here the solution with ph 2 is a strong acid as we know when we go towards the left of ph scale the amount of H+ ions concentration increases.

2. the solution with ph 6 have molecules as well as ions.

3. the solution with ph 13 is a strong base as here the concentration of oh- ions is more.

4. when a base is added to a solution it becomes a base as the concentration of oh- ions increases which can turn red litmus to blue.

hope this helps