chem

how do I caluclate (H3O+) in a solution if the PH is the following 1.81

  1. 👍
  2. 👎
  3. 👁
  1. pH = -log(H3O^+)
    1.81 = -log(H3O^+).
    Rearrange to -1.81 = log(H3O^+). Now
    punch in -1.81 on your calculator (or 1.81 and hit the change sign button to make -1.81) then hit the 10x button. That will return 0.01549 and you can round that to 0.015 to two significant figures (two are allowed with the 1.81.)

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    H2O(l)+H2O(l) ⇄ H3O+(aq)+OH−(aq) At 5.0°C, the value of Kw for the equilibrium shown above is 1.9×10−15 and the value of pKw is 14.73. Which of the following is correct for pure water at this temperature? A. [H3O+] =

  2. chemistry

    1. Find the pH of a solution whose [H3O+] is 9.5 X 10^ -8 M. 2. What is the [H3O+] concentration of a solution with a pH of 5.45? 3. What is the pOH of a solution with a [OH -] concentration of 2.97 X 10^ -10 M?

  3. chemistry

    A Ca(OH)2 solution has a pH of 8.0. Determine the values of [H3O+], [OH– ], and [Ca(OH)2] for the solution

  4. AP Chemistry

    A given weak acid HZ has a Ka=1.7×10−6. What is the H3O+ concentration of a solution of HZ that has a concentration of 0.78 mol/L? What is the pH of this solution of HZ? What is the percent ionization of HZ in this solution?

  1. Chemistry help

    2.00g of NaOH are dissolved in water to make 2.00L of solution. What is the concentration of hydronium ions, [H3O+], in this solution?

  2. Chemistry

    What is the equilibrium expression for the following acid dissociation reaction? CH3COOH + H2O -->

  3. Chemistry

    Calculate [H3O+] in the following aqueous solution at 25 ∘C: [OH−]= 1.9×10−9M Calculate [H3O+] in the following aqueous solution at 25 ∘C: [OH−]= 2.1×10−2M Calculate [H3O+] in the following aqueous solution at 25

  4. Chemistry(Please check)

    Which of the following equations correspond to the Ka2 for phosphoric acid? note: the double equal sign (==) means equilibrium. a) HPO42- (aq) + H2O (l) == H3O+(aq) + PO43-(aq) b) PO43- (aq) + H2O (l) == HPO42-(aq) + OH–(aq) c)

  1. Chemistry

    6.00 g of NaOH are dissolved in water to make 4.00 L of solution. What is the concentration of hydronium ions, [H3O+], in this solution?

  2. Honors Chemistry

    1. What is the pH of a solution whose [H3O+] is 1 X 10^ -5 M? 2. What is the [H3O+] concentration of a solution with a pH of 9? 3. What is the pH of a solution whose [H3O+] concentration is 3 X 10^-3 M? 4. What is the pH of a

  3. chemistry

    An aqueous solution has a pOH = 6.5. What is the [H3O+] of this solution?

  4. Chemistry

    Solution x has a pH of 4.35. Solution y has 10- times high [OH-] compared to solution x. Solution z has a pH 4.0 units higher than that of solution x. calculate the ration of [H3O+] between solutions x&y and between x&z. What is

You can view more similar questions or ask a new question.