H2S >> H+ + HS-
Ka = [H+][HS-]/[H2S]
Ka = 10^-7.0
Weak acids typically have a pH greater than 3. A pH of 3 or lower is generally associated with strong acids, which fully dissociate in solution. Weak acids only partially dissociate, resulting in a higher pH compared to strong acids. Therefore, while weak acids can have a pH below 7, they usually do not reach values as low as 3.
strong acid
Strong acids have a lower pH than weak acids. This is because strong acids completely dissociate in water to release all their hydrogen ions, resulting in a high concentration of H+ ions and a lower pH. Weak acids only partially dissociate, leading to a lower concentration of H+ ions and a higher pH.
No, weak acids do not resist changes in pH as strongly as strong acids do. This is because weak acids only partially dissociate in solution, so they contribute less to maintaining a stable pH compared to strong acids.
Lowest pH, strong acids, then weak acids, then salts of strong acids and strong bases, then salts of weak acids and strong bases, then weak bases, then strong bases. All very confusing!
Strong acids would be expected to have a lower pH level compared to weak acids. Strong acids fully dissociate in water to produce a higher concentration of hydrogen ions, resulting in a more acidic solution and a lower pH.
NO... STRONG ACIDS HAVE A pH VALUE BETWEEN 1 AND 4 ....pH VALUES OF 5 AND 6 ARE WEAK ACIDS AND 7 IS NEUTRAL.
No. Alkali's and acids are an separate ends of the pH scale, the pH of acids being 1, 2, 3, 4 and 5 (strong to weak) and the pH of alkali's being 11, 12, 13, 14 and 15 (weak to strong). Examples of acids are hydrochloric acid (strong) and vinegar (weak). Toothpaste is an example of a weak alkali.
Yes, strong acids dissociate more completely in water, leading to a higher concentration of H+ ions and a lower pH compared to weak acids which don't fully dissociate.
To determine if a substance is a weak acid, you can test its pH level. Weak acids have a pH level slightly below 7, indicating they release fewer hydrogen ions compared to strong acids.
The pH range of an acid is typically below 7 on the pH scale. Strong acids have a pH closer to 0, while weak acids have a pH closer to 7.
Yes In theory, you could have a very weak solution of a strong acid and a stong solution of a weak acid and they would have the same pH.