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    Ph Quetion I Dont Know How To Do This Can Some One Please Help Me ??
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    ...well what is it?
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    (Original post by dee321)
    Ph Quetion I Dont Know How To Do This Can Some One Please Help Me ??
    yo, seriously what is it? lol
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    What exactly are you trying to do?

    pH is an expression of the acidity of some solution - high pH = basic, low pH = acidic. It's the negative log (base 10) of the concentration of H+ in solution.
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    (Original post by Martinp23)
    What exactly are you trying to do?

    pH is an expression of the acidity of some solution - high pH = basic, low pH = acidic. It's the negative log (base 10) of the concentration of H+ in solution.
    JUST UPLOADED IT
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    Definition is -log{10}[H+]
    Pretty straightforward.
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    (Original post by Sockpirate)
    ...well what is it?
    JUST ULPODED IT
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    (Original post by resortini)
    yo, seriously what is it? lol
    JUST UPLOADED IT
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    They react 1:1
    Moles = conc x volume
    get moles, then new volume and divide moles by the volume. This gives concentration of H+. -log{10} that to get the PH.
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    (Original post by xSkyFire)
    They react 1:1
    Moles = conc x volume
    get moles, then new volume and divide moles by the volume. This gives concentration of H+. -log{10} that to get the PH.
    SORRY I DONT GET IT CAN YOU DO IT TELL ME WHAT REACTATNT DO I NEED TO FIND THE CONCENTRATIONS AND VOILUMES OF PLEASE??
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    You Need To Find The Volume And Subsequently The Concentration Of The H+ Ions From The Acid. You Can Do This From Subtracting The Volume Of Naoh From Hcl As They React In A 1:1 Molar Ratio.
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    (Original post by gilbo)
    You Need To Find The Volume And Subsequently The Concentration Of The H+ Ions From The Acid. You Can Do This From Subtracting The Volume Of Naoh From Hcl As They React In A 1:1 Molar Ratio.
    CAN U PLEASE WRITE THE STEPS SORRY
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    moles of H+ = \frac{24}{1000}-\frac{24.95}{1000}=5\times10^-5
    Concentration of H+ = \frac{5\times10^-5}{\frac{25+24.95}{1000}}
    Ph = -log_{10}[H+]
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    Stop shouting!
    I have sensitive ears...
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    (Original post by xarcul)
    Stop shouting!
    I have sensitive ears...
    LOL you said what I was thinking. How do you do all caps anyway, it always changes mine to lower case.
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    slight alkali as this is in excess. looking forward to exam on wed morning??
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    First of all, stop the capitals.
    Second HCl + NaOH -----> NaCl + H2O
    One mole of HCl reacts with one mole of NaOH so work out how many moles of each reactant you have by using the formula Moles = Volume x Concentration
    You have 0.025 moles of HCl and 0.02495 moles of NaOH.
    The rectant react in a 1:1 mole ratio, so 0.02495 moles of each react, leaving just 5x10^-5 moles of H+.
    Concentration of H+ is 5x10^-5 / 0.04995 = 1.001x10^-3
    pH= -log10 [H+] = -log10 [1.001x10^-3] = 3.00

    I think
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    lol, just realised it's multiple guess :p:
    They shoulda left the legacy spec the way it was
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    finallly got it thaks everyone yeeeeeeeeeeeeeeee
 
 
 
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