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April 28, 2015

Homework Help: 11th grade CHEMISTRY TITRATION LAB!

Posted by student on Sunday, December 14, 2008 at 8:56pm.

i have a tritation lab due tomorrow and i am stumped on a couple things.

its a titration lab using sodium hydroxide (NaOH)- 250 mL 0.300 M concentration, 10 mL of an unknown substance of vinegar, the avg. of titrated NaOH in the flask with vinegar is 27.7 mL

firstly its a titration lab where the purpose is determining the concentration of a acetic acid in an unknown sample of vinegar.
to begin..i have no idea what to write for the hypothesis. we added phenolphthlein so we have to reach an end-point.

secondly, i do not know what the balanced chemical equation would be. the only known substance is sodium hydroxide (NaOH) and vinegar but i dont know what kind.

and how do i calculate the concentration of the substance using avg volume?

thank you so much if you can help!

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