chem

this is my question
Calculate the hydronium ion consentration and the hydroxide concentration in blood in which the PH is 7.3.

I don't have invlog on my calculator so I hit log(7.3)= .863 for hydronium. Is this dumb for me to do?

That is dumb for you to do.

Get a calc that has an INV key. Mine costs eight dollars.

concentration= invlog (-7.3)= 5.01?E-08

Do you have a 2nd key, and a log key?

normally, 2nd Log is same as INVLOG

yes when I press 2nd then log I get 10^, is this correct?

In order to get antilog on mine I punch the 10x key. And a pH of 7.3 is hydroniuim of 5.01E-8.

ok I got that part. now how can I find Hydroxide concentration from this?

Two ways.
#1. (H^+)(OH^-) = 1 x 10^-14.
You know (H^+).

#2. pH + pOH = pKw = 14
You know pH, so subtract from 14 to get pOH. Then pOH = -log(OH^-).



PH + pOH = pKw =14
7.3 + pOH =pKw =14
7.3 - 14 = 6.7
pOH = -log(OH^-)
6.7 = -log(1.00 x 10^-14)
pOH = 1.92 x 10^6? I'm stuck


PH + pOH = pKw =14
7.3 + pOH =pKw =14
7.3 - 14 = 6.7
pOH = -log(OH^-) OK to here

6.7 = -log(1.00 x 10^-14)
pOH = 1.92 x 10^6? I'm stuck


pOH = -log(OH^-)
6.70 = -log(OH^-)
-6.70 = log(OH^-)
1.996 x 10^-7 = round to
2 x 10^-7 = (OH^-)

  1. 👍 0
  2. 👎 0
  3. 👁 232
asked by Jon

Respond to this Question

First Name

Your Response

Similar Questions

  1. chemistry

    Calculate the hydronium ion consentration and the hydroxide concentration in blood in which the PH is 7.3. Hydronium = [H3O+] = 10-pH or [H3O+] = antilog (- pH) and I got 1.00 x 10^7.3 for both concentrations is this correct?

    asked by Jon on March 23, 2007
  2. Chemistry

    1)How many joules are needed to heat 8.50 grams of ice from -10.0 degrees to 25.0 degrees? 2)Calculate the hydronium ion concentration and the hydroxide ion concentration in blood, the pH of which is 7.3(slightly alkaline)

    asked by Mike on January 17, 2008
  3. chemistry

    Given the consentration of either hrgrogen ion or hydroxide ion, use the product constant of water to calculate the consentration of the other ion at 298 K. A: [H+]=1.0x10^-4M B: [OH-]= 1.3x10^-11M

    asked by Liz on May 11, 2012
  4. Chemistry

    The pH of a solution is 1. Which of the following statements are also true for the solution? (Select all that apply.) It will change the color of red litmus to blue. The concentration of hydronium ion is equal to the concentration

    asked by Cody on May 18, 2012
  5. chemistry

    what are the hydronium-ion and the hydroxide ion concentration of a solution at 25 C that is 0.0050 M strontium hydroxide, Sr(OH)2? a solution of hydrochloric acid is 0.20 M HCl. What is the hydronium-ion at 25 C? What is the

    asked by Henry on August 6, 2011
  6. chemistry

    15029 What is the hydronium ion (aka H+) concentration for a solution that is 2.50 x 10-4M in hydroxide. what do i do here? The product of hydroxide and hydronium is a constant, at 25C, it is 1*10^-7

    asked by sam on May 1, 2007
  7. Gen cmehistry

    Calculate the hydroxide ion concentration in an aqueous solution that contains 3.50 x 10-3 M in hydronium ion.

    asked by asasas on April 21, 2010
  8. chemistry

    pH = 3.89 calculate concentration of hydronium ion and hydroxide ion in solution.

    asked by shana on July 26, 2013
  9. Chemistry

    A solution has a hydroxide-ion concentration of 7.48X10-5 M. What is it's hydronium-ion centration? I have no idea where to begin on this question...

    asked by Robby on February 18, 2013
  10. chemistry

    Calculate the hydronium ion concentration and pH in a 0.037 M solution of sodium formate, NaHCO2. hydronium ion concentration i don't understand these

    asked by sara on March 6, 2013

More Similar Questions