NCERT Solution for Class Tenth Science Chapter 2

Acids, Bases and Salts

Intext Questions

Page No-12

Questions No-1

# You have two solutions, A and B. The pH of solution A is 6 and pH of solution B is 8. Which solution has more hydrogen ion concentration? Which of this is acidic and which one is basic?

Share

A pH value of less than 7 indicates an acidic solution, while greater than 7 indicates a basic solution. Therefore, the solution with pH = 6 is acidic and has more hydrogen ion concentration than the solution of pH = 8 which is basic

For more answers visit to website:

https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/

When pH value is less than 7 it indicates an acidic solution, while greater than 7 it indicates a basic solution. Therefore, the solution A with pH = 6 is acidic and has more hydrogen ion concentration than the solution B of pH=8 which is basic.

The pH scale is a logarithmic scale that measures the acidity or basicity of a solution. The pH is defined as the negative logarithm (base 10) of the hydrogen ion concentration ([H +]) in moles per liter:

pH = -log[H+]

Given that solution A has a pH of 6 and solution B has a pH of 8, we can make the following observations:

1. Hydrogen Ion Concentration:

» Solution A: [H+] = 10−pH of A =10−6 moles per liter

» Solution B: [H+]= 10 −pH of B =10−8 moles per liter

» Comparing these values, 10−6 is greater than 10−8, so solution A has a higher hydrogen ion concentration.

2. Acidity and Basicity:

» Lower pH values indicate higher acidity, and higher pH values indicate higher basicity.

» Solution A (pH 6) is more acidic than solution B (pH 8).

So, to summarize:

» Solution A has a higher hydrogen ion concentration and is more acidic.

» Solution B has a lower hydrogen ion concentration and is more basic.