Recent content by Tiptronic

Hi again. I've stayed up all night and I've nearly lost the will to live. Is the science of this ok? The osazone that is precipitated in this reaction is a solid at room temperature. It has a high boiling point due to its structure and the intermolecular forces acting on it. There are a...

Thanks again. I hope I haven't taken up too much of your time.

Thanks for that, really appreciate it. Btw, you wouldn't happen to know of any websites with information on the osazone, why its solid at room temperature and why it precipitates out? I've looked a lot but to no avail. Thanks.

Sorry, I didnt understand. So do I multiply the 0.0028 mol of Phenylhydrazine hydrochloride by 3, and then form a ratio from that? Its part of my write-up of my investigation. So I am ok in saying that such a small amount is justified, as the Phenylhydrazine hydrochloride should be in...

Firstly, do I not need to multiply the 0.0028 mol by 3, if the equation says that 3 mols reacts with 1 mol of glucose? So you're saying 0.2ml is too little? Doesnt 1:20 means that the phenylhydrazine hydrochloride is in excess? Then isn't that ok, since there is enough to react with all of...

Thank you for the reply geoffjb. Would this be a good explanation? The Glucose is 0.000139 mol and the Phenylhydrazine hydrochloride is 0.0028 mol. According to the equation the ratio is 1:3. 0.0028/0.000139 = 20 (2sf) This means that the phenylhydrazine hydrochloride is more than...

Sorry I am an idiot. http://www.tamscc.org/forum/images/smilies/bang_head.gif The whole point of this investigation was to find the glucose amount: I did an experiment and found that in one bottle (380ml) there is 47g of glucose. Thus, if 380ml contained 47g, then 0.2ml would contain...

So, there is no way I can work out the concentration from the information I have? So could you tell me how I can justify the use of 0.2ml of the Lucozade Glucose drink? My head hurts. :(

Just thought of something: Could i use this: n = concentration x volume Though i doubt "100%" is a concentration that can be used in the above relationship?

Thanks for the quick replies guys. Glucose + 3 Phenylhydrazine hydrochloride --> Osazone + Phenylamine + Ammonia + Water These are what I am using in this reaction: 0.2ml of a Lucozade drink (not diluted, so its 100% concentrated as you'd buy it off the shelf) 0.4g Phenylhydrazine...

Question: 0.2ml glucose solution. Molar mass of glucose = 180 g/mol How many moles? If it was a mass in grams it would be easy: n = mass/molar mass But what do I do now its a volume? Can I still use the same relationship, since grams is equivalent to ml isn't it? If yes, then...