Neutral
The pH of a solution is defined as -log10[H+]. Thus a solution with a hydrogen ion concentration of 10-5M has a pH of 5. [H+] = 10-5 pH = -log[H+] pH = - log [10-5] pH = 5
a pH of 4 is most acidic than a solution with a pH of 5. In general, the lower the pH, the more acidic the solution is.
It depends on what the solution is. What affects the pH is the element. If there are more H+ ions in the solution you're referring to, the solution will be more acidic (lower pH). If there are more (OH)- ions in the solution, the solution will be more basic (higher pH).
Lower pHs are more acidic Higher pHs are more basic. Therefore, the pH of 5 will be more acidic than pH of 7 ** also, the pH of 7 is neutral. Edit by Kelvin876: Higher pHs are alkalines. **Each number lower is 10 times greater in acidity than the prior number. This would mean that a solution with a pH of 5 is 100 times greater in acidity compared to a solution with a pH of 7.
The pH of a solution containing 5 acetic acid is approximately 2.9.
The pH of the second solution must be neutral (pH 7), as mixing an acidic solution (pH 4) with a basic solution (pH 7) would result in a pH closer to 7. This indicates that the pH of the unknown solution is around 7 to yield a final pH of 5 when mixed with the pH 4 solution.
The difference in hydrogen ion concentration between solutions with pH 4 and pH 5 is tenfold. A solution with pH 4 has 10 times more hydrogen ions (H+) compared to a solution with pH 5. This is because the pH scale is logarithmic, with each unit change representing a 10-fold change in hydrogen ion concentration.
5
No, a pH of 5 is ten times more acidic than a pH o6.
- log(1.7 X 10 -5 M) = 4.8 pH =======
pH = - log [H+] so pH = - log 4.219x10^-5 = 4.375
The solution has become less acidic and more neutral as the pH has increased from 5 to 7. A pH of 5 is acidic and a pH of 7 is considered neutral on the pH scale, which ranges from 0 (most acidic) to 14 (most basic). The change indicates a decrease in the concentration of hydrogen ions present in the solution.