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 solution with a pH of 4 is ten times more acidic than a solution with a pH of 5. The pH scale is logarithmic, so each unit change represents a tenfold difference in hydrogen ion concentration.
A solution with a pH of 5 has 100 times more protons (H+) than a solution with a pH of 7, because the pH scale is logarithmic and each unit change represents a 10-fold difference in proton concentration.
A solution with a pH of 7 is neutral, while a solution with a pH of 5 is acidic. This means the solution with a pH of 5 has a higher concentration of hydrogen ions (H+) compared to the 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.
The pH can be calculated using the formula pH = -log[H+]. Given that the H+ concentration is 1.7x10^-5, the pH would be pH = -log(1.7x10^-5) ≈ 4.77. Thus, the pH of the solution is around 4.77.
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.