Does the temperature given matter?

[Angel Gutierrez 2E]

For sapling q 5, I am unable to calculate the H+ ion while using 10-pH, which should be 10^-2.44.

Should I take the temperature into consideration when calculating the H+ ion?

[Chem_Mod]

Temperature does have an impact on pH, but in the context of this class you will most always be working with a temperature of 25 degrees Celsius.

[Nika Gladkov 1A]

Temperature technically matters because it can affect the equilibrium position of the reaction. However, you should not take into account for this problem because it is beyond the scope of the syllabus for 14A. I think that your error was that you did not use a negative sign when calculating the concentration of H+ from pH. Since pH =-log [H+], your concentration would be [H+]=10^(-pH).

[Chem_Mod]

Hi Angel,

You are on the right track: [H⁺]=10^-pH. I got 3.6 x 10^-3M.

I think you may be confusing a formula for pOH: pOH + pH = 14 so pOH = 14 - pH.

[Alex Mele 2A]

Temperature does matter, but 25ºC is a standard temperature where everything we have learned applies. I think you may have just made a calculator error here, because 10^(-2.44) is around 3.6 x 10^(-3).

[Michael Cardenas 3B]

Temperature does matter if it is at an extreme but in this case the temperature is 25 degrees which is about room temperature so it shouldn't have an effect on the answer.