pH and [H+] : QUANTIFICATION & COMPARISON

✅For each one point increase in the pH scale, the concentration of hydrogen ions, and the acidity, changes by a factor of 10. 

✅Therefore, a solution with a pH of 4 is 10 times as acidic as a solution with a pH of 5, and 100 times more acidic than a solution with a pH of 6. 

✅The scale is relative in terms of [H +], so although a pH of 8 implies an alkaline solution, the number of H + ions still differs 100-fold from a solution with a pH of 10. 

✅HOW TO FIND pH WHEN WE KNOW THE STRENGTH OF THE SOLUTION 

🔹pH = –log10[ H +]

🔹If solution is 0.01 M solution ,[H+] = 10^2= –log (10^2) = pH 2 

🔹More simply put, the pH is the number of times you need to move the decimal point to get the first non zero value (here it's 1)