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There is no such acid which is both strong and weak. An acid is either weak or it is strong.
However, sulfuric acid as a diprotic acid is a strong acid in its first dissociation.
H2SO4 --> H+ + HSO4-
and is a weak acid in its second dissociation
HSO4- --> H+ + SO42-
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It is a strong acid only for the first hydrogen ion that is produced.
(1) H2SO4 --> H+ + HSO4^-
The remaining bisulfate ion, HSO4^-, is a weak acid and only partially dissociates.
(2) HSO4^- <==> H+ + SO4^2-
A misconception is that since sulfuric acid is a strong acid, that it dissociates like this:
(3) H2SO4 --> 2H+ + SO4^2-
That simply isn't the case except for extremely dilute solutions. As the concentration of the acid decreases, the acid behaves more and more like a strong diporotic acid. At "infinite dilution" it is accurate to write the dissociation as equation (3).
Read more: http://wiki.answers.com/Q/Is H2SO4 a strong acid or weak acid#ixzz2TQB85UJp
What else can I help you with?
Can every strong electrolyte be considered a strong acid?
No, not all strong electrolytes are strong acids. Strong electrolytes include strong acids, strong bases, and soluble salts. Strong acids are a subset of strong electrolytes that fully dissociate into ions when dissolved in water, leading to a high concentration of ions in solution.
Does a weak acid resist a change in the 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.
Are weak acids on the pH scale less than 3?
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.
Is NO3 a weak or strong acid?
This is based on acids. HNO3 is a strong acid.
What are the strong and weak acids?
Strong acids are acids that dissociate readily from their hydrogen ion(s). Examples include: Strong acids HCl, hydrochloric acid HNO3, nitric acid HI, hydroiodic acid H2SO4, sulfuric acid HBr, hydrobromic acid HClO4, perchloric acid HClO3, chloric acid Weak acids do not dissociate readily from their hydrogen ions. They, therefore, act weakly as an acid. All edible acids are, naturally enough, weak acids. Examples include: Weak acids HCN, hydrocyanic acid (COOH)3C3OH, citric acid tartaric acid, lactic acid, oxalic acid ...
What is true about weak acids as compared to strong acids?
Weak acids have a larger value of pKa than strong acids
What are the differences in properties and behavior between a weak acid and a strong acid?
Weak acids and strong acids differ in their properties and behavior. Weak acids partially dissociate in water, while strong acids fully dissociate. This means weak acids have lower conductivity and pH compared to strong acids. Additionally, weak acids have higher equilibrium constants and are less reactive than strong acids.
Are acids used strong or weak?
acids are of types.....concentrated acids are strong.
Which has a lower pH weak acids or strong acids?
strong acid
What is the difference a weak and a strong acid involves the acid ability to do what?
The acids ability to disassociate completely in solution. Strong acids do and weak acids do not.
Is washing up liquid a weak or strong alkali?
it is weak and strong because it neutralises acids. So its strong not weak but weak not strong.
Are organic acid weak or strong?
Organic acids are generally weak acids. They do not fully dissociate in water, resulting in a reversible reaction that generates both the acid and its conjugate base. This characteristic distinguishes them from strong acids that completely dissociate in water.
Do strong acids have more or fewer ions than weak acids?
Strong acids have more ions in solution than weak acids because they completely dissociate into ions when dissolved in water, while weak acids only partially dissociate. This results in a higher concentration of ions for strong acids.
When weak acids react with strong acids?
When weak acids react with strong acids, the strong acid will donate a proton to the weak acid, resulting in the weak acid being protonated. This protonation increases the concentration of the weak acid cation. The conjugate base of the weak acid is formed as a result.
Can strong and weak acids and strong and weak bases be determined by using an indicator?
yes
What are the similarities between strong acids and weak acids?
Strong acids and weak acids are both types of acids that can donate protons in a chemical reaction. They both can lower the pH of a solution by releasing hydrogen ions. However, strong acids completely dissociate in water, while weak acids only partially dissociate. Additionally, both types of acids can react with bases to form salts and water.
What do strong acids produce more than weak acids at the same concentration?
Strong acids produce more hydrogen ions (H+) in solution compared to weak acids at the same concentration. This is because strong acids completely dissociate in water, releasing all of their hydrogen ions, while weak acids only partially dissociate.
