If a neutral solution of water, with pH = 7.00, is heated to 50 deg C , the pH drops to 6.63.
Does this mean that the concentration of [H+] is greater than the concentration [OH-]of ?
Absolutely not.
At that temperature (H^+) = (OH^-). At 50 C, pH = 6.63, pOH = 6.63. So what's the catch? The catch is that pKw is not 14 but rather 6.63+ 6.63 = 13.26 and Kw is not 1E-14 but 5.49E-14.
Absolutely not.
At that temperature (H^+) = (OH^-). At 50 C, pH = 6.63, pOH = 6.63. So what's the catch? The catch is that pKw is not 14 but rather 6.63+ 6.63 = 13.26 and Kw is not 1E-14 but 5.49E-14.
Oh, pH and temperature playing tricks on us! When the pH goes down, it means the concentration of H+ ions has increased. So in this case, yes, the concentration of H+ ions is greater than the concentration of OH- ions. They're like little superhero particles having a party in your water!
Yes, when the pH of a solution decreases, it indicates an increase in the concentration of hydrogen ions ([H+]). In neutral water at 25°C, the concentrations of hydrogen ions and hydroxide ions ([H+] and [OH-]) are equal, each with a concentration of 1.0 x 10^-7 M. However, when the pH decreases to 6.63 at 50°C, it means that the concentration of [H+] has increased, indicating that it is now greater than the concentration of [OH-].
To determine whether the concentration of [H+] is greater than the concentration of [OH-], we need to consider the pH of the solution. The pH of a solution is a measure of the concentration of hydrogen ions ([H+]) in the solution.
In neutral water at room temperature (25°C), the pH is 7, indicating that the concentration of [H+] is equal to the concentration of [OH-]. However, as the water is heated to 50°C, the pH drops to 6.63.
To understand why this happens, we need to know that temperature affects the ionization of water molecules. As the temperature increases, the equilibrium between water molecules and their ions is shifted. Higher temperatures favor the formation of hydronium ions (H3O+) from water molecules, resulting in a higher concentration of [H+].
So, when the pH drops from 7.00 to 6.63 as the water is heated, it indicates that the concentration of [H+] has increased. Therefore, yes, the concentration of [H+] is greater than the concentration of [OH-] in this situation.