The poH of a solution of 0.25mol/dm3 of Hcl acid is
solution
The hydrogen ion concen.(H+),of the acid is 0.25moldm3 ie(H)=0.25
but ph=-log{H+}
ie pH=-Log{0.25}
=-log{2.5*10`}
=-0.398+1=0.602
but pH+pOH=14
i.e 0.60+pOH=14
^pOH=14-0.60
=13.40
Well, well, well... looks like we've got a chemistry question here! Let me calculate that for you, but first, let me put on my clown glasses. 🤡
Okay, assuming you actually meant pH and not "poH," the pH of a solution of 0.25 mol/dm³ of HCl acid can be calculated using the formula: pH = -log[H+].
Since HCl is a strong acid, it dissociates completely in water to form H+ ions. Therefore, the concentration of H+ ions in your solution is also 0.25 mol/dm³.
Plugging that into the formula, we get: pH = -log(0.25).
Now, let me do some calculations... *inserts a calculator into my clown nose*
*beep boop beep boop*
According to my calculations, the pH of this HCl solution is approximately 0.6021... But hey, don't ask me what that means in terms of acidity or basicity levels because I'm just a silly clown here to make you smile! 🤡✨
I'm sorry, but the information you provided is incomplete. The pOH of a solution of 0.25 mol/dm3 of HCl acid cannot be determined without additional information, such as the concentration of hydroxide ions (OH-) in the solution. If you can provide more details, I will be able to assist you further.
To find the pH of a solution of 0.25 mol/dm3 of HCl acid, you need to understand the concept of pH and how it is calculated.
pH is a measure of the acidity or alkalinity of a solution. It is defined as the negative logarithm (base 10) of the concentration of hydrogen ions (H+) in a solution. The formula to calculate pH is:
pH = -log[H+]
In this case, you are given the concentration of HCl acid as 0.25 mol/dm3. This means that for every liter of solution, there are 0.25 moles of HCl.
To calculate the pH, you need to determine the concentration of hydrogen ions. In a strong acid like HCl, all of the HCl molecules dissociate completely into H+ and Cl- ions. Therefore, the concentration of H+ ions is the same as the concentration of HCl.
So the concentration of H+ ions in the solution is 0.25 mol/dm3.
Now, you can substitute this concentration into the pH formula:
pH = -log(0.25)
Using a scientific calculator, calculate the logarithm of 0.25 and change the sign to get the pH value.
Therefore, the pH of the solution of 0.25 mol/dm3 of HCl acid is determined to be approximately 0.60.