Can a dilute solution of a strong acid ever have a higher pH than a more concentrated solution of a weak acid?

According to me, a strong acid will fully ionise in water compared to a weak acid which will partially ionise. Therefore a strong acid will contribute more H+ ions than a weak acid. Therefore, the pH of a strong acid solution will be higher than a weak acid solution.

Can a dilute solution of an acid have a more acidic pH than a concentrated solution of acid?

However, if an aqueous acid mixture (such as sulfuric acid, mentioned above) is added to water, the resultant pH from adding a dilute one would be higher (lower acidity) than for a concentrated one.

Can the pH of a strong acid and a weak acid ever be the same value?

Strong and weak are descriptors used to indicate how readily the acid dissociates into ions, one of which will be hydrogen. Strong acids dissociate more readily, so will often contribute to a lower pH, but it isn’t the same thing.

Can you have a dilute solution of a strong acid?

An aqueous solution of strong acid can be diluted by adding more water to the solution.

Why does dilution affect strong acids more?

Diluting an acid decreases the concentration of H+(aq) ions, which increases the pH level of the solution towards 7, making it less acidic. However, the pH level of an acidic solution cannot become greater than 7, because the water you add to dilute it is not alkaline.

Can a dilute acidic solution be a strong acid?

It is important that you don’t confuse the words strong and weak with the terms concentrated and dilute. The concentration tells you about how much of the original acid is dissolved in the solution. It is perfectly possible to have a concentrated solution of a weak acid, or a dilute solution of a strong acid.

Is it possible to have a dilute solution of a strong acid or base and a concentrated solution of a weak acid or base at the same pH?

As you will see below, the strength of an acid is related to the proportion of it which has reacted with water to produce ions. It is perfectly possible to have a concentrated solution of a weak acid, or a dilute solution of a strong acid.

Does dilution affect the strength of an acid?

When we dilute an acidic solution, the number of H+ ions per ml of solvent decreases which means that it’s acidic strength is decreased. NOTE: Even after infinite dilution, the pH of acidic solution will remain less than 7.

Does dilution increase pH?

Diluting acids and bases Adding water to an acid or base will change its pH. When an acidic solution is diluted with water the concentration of H + ions decreases and the pH of the solution increases towards 7. To make the pH change by 1, a tenfold dilution is required (eg adding 9 cm 3 of water to 1 cm 3 acid).

Can you make the pH of a dilute strong acid higher?

Yes you can make the pH of a dilute strong acid higher than the pH of a weak acid. Acidity is the a measure of how much [math]H^+[/math] ions are present in a unit volume of a solution. The lower the pH, the more [math]H^+[/math] is present in the solution.

How do you dilute an acid to a certain concentration?

If you want to dilute the acid to a certain concentration or pH, you have to do a calculation which calculates required amount of distill water. When concentrated acid is diluted, hydronium ion concentration decreases which results a higher pH value. 0.1 M strong acid is diluted upto 0.01 M.

Why do weak acids have a lower pH than strong acids?

Since the concentration of the weak acid is much higher, even though it only dissociates partially, it produces more H+ ions than the strong acid, leading to a lower pH. At equal concentrations, a strong acid will typically have a lower pH than a weak acid, since the strong one will donate more protons to the solution.

What are weak acids that are also dilute?

A weak acid that is also dilute would be an acid where only a small percentage of molecules ionise when added to a solution, and you also add only a small amount of the acid to the solution. The table below summarises these concepts.