hey i was wondering, i have this question:

Sketch a pH curve for the titration of 40.00mL of 0.100 M hydrazine, H2NNH2, having a K of 3.0x10^-6 by 0.100 M HCIO4
i know you can t sketch but could you tell me what to do with the "K of 3.0x10^-6" i could sketch the curve without the "K" but i don t know if its an important part for the sketch

1 answer

Here is a site that sketches MANY titration curves. Look at the left column, third one down from the top. That is a weak acid vs strong base titration curve.
If you know how the strong acid vs strong base looks, for a weak acid/strong base, just start the curve about 3 instead of 1 and slope it a little more.
http://www.google.com/search?q=titration+curves&hl=en&client=firefox-a&hs=2ud&rls=org.mozilla:en-US:official&prmd=imvnsfda&tbm=isch&tbo=u&source=univ&sa=X&ei=vAEGUNjfMOT02wWdtOC7BQ&ved=0CFwQsAQ&biw=683&bih=403