Louise
Former Expert
Posts: 921
Joined: Mon Jan 16, 2006 2:17 pm

Re: What is in a starch solution??

Postby Louise » Thu Apr 12, 2007 1:44 pm

jamestheconfused wrote:Hello there,

I am really confused by this whole project with the vitamin C thing. What is a starch solution????? I was told it was baking soda with water but it never mixed properly so the whole this was a flop! Please help and tell me what a starch solution is.[/b]


Who told you starch was baking soda?

This is starch:
http://en.wikipedia.org/wiki/Starch

There is no way that the experiment will work with baking soda, as it is completely the wrong chemical.


Louise

mathisfun
Posts: 2
Joined: Sun May 06, 2007 7:58 pm

testing vitamin C in orange juice

Postby mathisfun » Mon May 07, 2007 8:58 pm

Donna, your answers are great!!! I am doing that project as well and my experiment went well, but I do not understand how to determine how many mg of vitamin C I had in each juice. I made my starch solution and tested my control of Vitamin C and then 4 different types of orange juice. I counted the number of drops it took for the color to change, but I do not understand how to take my experiment and determine the mg of Vitamin c from my results. Do you have a formula I can use?

Thanks so much!!!!!!!!!!

Jon
I have tested for vitamin C with iodine but do not know how to figure out how many mg of Vitamin C with the number of drops - do you have a formula?


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