Chemistry 12

calculate the Ph of a solution composed of 0.75 grams of KOH dissolved in 500ml of water. assume total ionization.

  1. 👍 0
  2. 👎 0
  3. 👁 259
asked by jeremy
  1. KOH ==> K^+ + OH^-
    mols KOH = grams/molar mass = ?
    M KOH = mols KOH/L solution = ?
    pOH = -log(KOH)
    Then pH + pOH = pKw = 14. You know pKw and pOH, calculate pH.

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. chemistry

    What is the percent by mass of 3.55 g NaCl dissolved in 88 g H2O? 2. A solution is made by adding 1.23 moles of KCl to 1000.0 g of water. What is the % by mass of KCl in this solution? 3. If you have 100.0 mL of a 25% aqueous

    asked by Anonymous on February 10, 2011
  2. Chemistry

    Calculate the [H3O+] when 1.65 grams of KOH are dissolved in 500.0 mL of solution

    asked by Amrita on May 12, 2010
  3. chemistry

    A compound was found to be composed of the following amounts of elements: 20.00% wt% C, 26.64wt% O, 46.65 wt%N, and 6.71wt%H. A 6.125 grams sample of this compound dissolved in 46.205 grams of water as a solution was found to have

    asked by lucy on April 25, 2013
  4. chemistry

    What is the percent by mass of 3.55 g NaCl dissolved in 88 g H2O? 2. A solution is made by adding 1.23 moles of KCl to 1000.0 g of water. What is the % by mass of KCl in this solution? 3. If you have 100.0 mL of a 25% aqueous

    asked by Anonymous on February 10, 2011
  5. chemistry

    What is the percent by mass of 3.55 g NaCl dissolved in 88 g H2O? 2. A solution is made by adding 1.23 moles of KCl to 1000.0 g of water. What is the % by mass of KCl in this solution? 3. If you have 100.0 mL of a 25% aqueous

    asked by Anonymous on February 10, 2011
  1. chemistry

    how many grams of AgNO3 would need to be dissolved in 1 liter, 500mL, and 100mL in order to make a 1M solution? need to show work and answers are in grams....????

    asked by al on July 16, 2010
  2. Chemistry

    Calculate the molarity of the following solutions: 5.0g of KOH in 4.0L of KOH solution I went from grams of KOH to moles of KOH to molarity but still got the wrong answer... 5.0g KOH X 1 mol KOH/56.108g KOH = 5.0 mol

    asked by TT on December 9, 2010
  3. Chemistry

    A sample of KHC2O4 weighing 0.5839 g is dissolved in 25 mL of water and an endpoint is reached when 31.99 mL of KOH has been added. Calculate the molarity of the KOH solution. KHC2O4(aq) + KOH(aq) ¨ K2C2O4(aq) + H2O(l) because

    asked by Andrew on January 9, 2008
  4. Chemistry

    What is the pH of a solution prepared by mixing 500mL of 2.0M HCN (Ka= 4.9x10^-10) with 500mL of 1.0 M KOH?

    asked by George on March 10, 2015
  5. chem

    a.)How many moles of NaOH are required to prepare 2.00L od 0.380M solution? answer is 0.760 mole of NaOH (mole/l * 2.00L) b.)What will be the molarity of a solution if 3.50 g of KOH are dissolved in water to make 150.0 mL of

    asked by Angel Locsin on November 30, 2012

More Similar Questions