Chemistry

posted by .

What is the pH of a solution in which 25 mL of .10 M NaOH is added to 15 mL of .10 M HCl?

I have calculated the amount of moles of each, but I'm not really sure where to go from there. Thanks!

  • Chemistry -

    moles NaOH = M x L = 0.1 x 0.025 = 0.0025
    moles HCl = 0.015 L x 0.1 M = 0.0015
    So if they react 1:1 (from the equation), which one will be used up? And which is the one in excess? The excess will determine the OH if it is NaOH or it will determine H if it is HCl. Then moles remaining of that reagent/L solution is M and go to pH or pOH from there.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. CHemistry

    im not sure how u solve these types of problems... How many moles of NaOH are contained in 200ml of a 0.1M of NaOH?
  2. chem

    HCl is a strong acid and ionizes 100%. NaOH is a strong base and ionizes 100%. We have no way of knowing the pH of HCl + H2O because the problem doesn't state the amount of HCl added or the concentration of HCl. For the NaOH + HCl …
  3. Chemistry

    I am not really sure how to do this: Calculate the pH when 1.0*10^-3 moles of solid NaOH is added to a) One liter of 9.1*10^ -6 M HCL b) One liter of a solution containig 0.05 M CH3COOH and 0.1 M CH3CooNa
  4. Chemistry

    I dissolved 4g of solid NaOH in 200mL of water. I converted grams of NaOH to moles by 4g/40g/moles= 0.1moles. I calculated the concentration of NaOH by 0.1/(200mL/1000L)= 0.5 moles/L. I now have to record the expected mass of benzoic …
  5. chemistry

    three student chemists measured 50.0 mL of 1.00 M NaOH in separate Styrofoam "coffee cup" calorimeters ( Part B). Brett added 50.0 mL of 1.10 M HCI to his solution of NaOH; Dale added 45.5 mL of 1.10 m HCL 9 eqaul moles) to his NaOH …
  6. Chemistry

    1. As I understand it--As an acid is added to neutral water the (OH-) will...decrease?
  7. CHemistry- For Dr.Bob

    Hey Dr.Bob, I asked two days ago a question about a titration lab I had that you answered, but I still have one more question about that lab. Here's the lab summary: For my chemistry of solutions class, we had a titration lab where …
  8. chemistry

    So I did a titration lab at school with NaOH and HCl. i have to find: - volume used, NaOH - Moles of NaOH - Moles of HCl -Volume used unknown HCl - Molarity of HCl solution My concentration of NaOH stock solution was 0.100 mol/lL Final …
  9. Chemistry (molarity) (sorta an emergency)

    I'm doing a titration lab and writing a lab report where I'm sort of stuck on how exactly to find the concentration of HCl. These are the following info I have from the lab, Equation: HCl(aq)+NaOH(aq)-> H2O(l)+NaCl(aq) -Calculated …
  10. Chemistry Titration-emergency :(

    [HCl]=0.1213M Avg Amount HCl added: 14.15mL Volume of Saturated Solution of Ca(OH)2 in NaOH used: 25 mL and its concentration was 0.05349 M. 1.)Calculate the total [OH ] in the saturated solution of Ca(OH)2 in sodium hydroxide -> …

More Similar Questions