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Thread: Need help calculating change in pH

  1. #1 Need help calculating change in pH 
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    I need to figure out how to calculate the change in pH when 6.00 mL of .100 M HCl (aq) is added to a 100 mL of a buffer solution that is .10 M in NH3 (aq) and .10 M in NH4Cl (aq). Also I need to calculate the change in pH when 6.00 mL of 0.10 M Na)H (aq) is added to the original buffer solution. I have tried several ways to do this and haven't gotten in correct so explanation of steps would be great. Thanks


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  3. #2  
    Geo
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    Keep all your units the same during calculations


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  4. #3  
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    Quote Originally Posted by nsr7 View Post
    I need to figure out how to calculate the change in pH when 6.00 mL of .100 M HCl (aq) is added to a 100 mL of a buffer solution that is .10 M in NH3 (aq) and .10 M in NH4Cl (aq). Also I need to calculate the change in pH when 6.00 mL of 0.10 M Na)H (aq) is added to the original buffer solution. I have tried several ways to do this and haven't gotten in correct so explanation of steps would be great. Thanks
    I got 2.059 for the first one and 1.080 for the second one. It's my homework to learn to use this speciation program; so, I thought I'd plug in your variables and see if I got it right. If you can, post your answers when you get them. I would like to compare.

    GOOD LUCK ON YOUR HOMEWORK!
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