Anonymous
Anonymous asked in Science & MathematicsChemistry · 1 decade ago

What is the pH of a solutiont that is .1 M HCl (strong acid)?

( And a few more questions if you can answer these too:] )

What is the pH of a solution that has a pOH of 11?

What is the molarity, or concentration, of [H3O+] of a solution at pH 5?

(step by step answers would be ideal, thanks!)

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  • 1 decade ago
    Best Answer

    Question 1:

    Note the formula of dissociation for HCl:

    HCl --> H+ + Cl-.

    Because HCl is a strong acid, it totally dissociates in water.

    In order to figure out the pH of this solution, we must know the molarity of [H+] in solution to plug it into an equation.

    Because HCl is a strong acid, we can use stoichiometry to find out the molarity of [H+]:

    0.1 M HCl (1 mol HCl/1 mol H+) = 0.1 M H+

    Now plug the answer into this equation:

    pH = -log[H+] = -log (0.1 M) = 1.0

    The pH of the solution is 1.0

    ------------------------------------------------------------------------------------------------------

    Question 2:

    To find the pH of a solution when we are given pOH, remember that in 25 degrees Celsius, pH + pOH = 14.00. Algebraically manipulate this equation and substitute pOH:

    pH + pOH = 14.00 --> pH = 14.00 - pOH = 14.00 - 11 = 3

    The pH of this solution is 3

    ------------------------------------------------------------------------------------------------------

    Question 3:

    [H3O+] is another way of saying [H+].

    In order to figure the concentration of [H+] from pH, we must manipulate the equation used in question 1 to find [H+]:

    pH = -log[H+] --> [H+] = 10^-pH = 10^-5 = 1*10^-5 M

    The concentration of H3O+ ions in solution is 1*10^-5 M

  • Anonymous
    4 years ago

    This Site Might Help You.

    RE:

    What is the pH of a solutiont that is .1 M HCl (strong acid)?

    ( And a few more questions if you can answer these too:] )

    What is the pH of a solution that has a pOH of 11?

    What is the molarity, or concentration, of [H3O+] of a solution at pH 5?

    (step by step answers would be ideal, thanks!)

    Source(s): ph solutiont 1 hcl strong acid: https://biturl.im/HGZ9P
  • 3 years ago

    Ph Of Hcl

  • 3 years ago

    Ph Of 1m Hcl

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  • Aline
    Lv 4
    4 years ago

    For the best answers, search on this site https://shorturl.im/7nM8M

    pH you are given to be 1.0 in your question not 1.1 this means the concentration of H+ is 10^-1 100 times weaker is 10^-1/10^-2 = 10^-3 and thus acetic acid has a pH of 3.0

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