arun1390
Posts: 3
Joined: Sun Jul 22, 2007 6:39 am

A QUESTION ABOUT CALCULATING CONCENTRATION OF SUGAR

Postby arun1390 » Sun Jul 22, 2007 7:10 am





I CHOOSED A PROJECT TO CALCULATE CONCENTRATION OF SUGAR IN A SOLUTION USING LASER POINTER WITH THE APPLICATION OF SNELLS LAW.I UNDERSTOOD HOW TO FIND REFRACTIVE INDEX OF SUGAR SOLUTION IN THE EXPERIMENT.BUT I HAVE NO IDEA HOW TO FIND CONCENTRATION OF SUGAR FROM THE REFRACTIVE INDEX .WOULD YOU HELP TO SOLVE THIS PROBLEM.PLEASE[/u][/i]

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

Re: A QUESTION ABOUT CALCULATING CONCENTRATION OF SUGAR

Postby Louise » Sun Jul 22, 2007 9:49 am

arun1390 wrote:



I CHOOSED A PROJECT TO CALCULATE CONCENTRATION OF SUGAR IN A SOLUTION USING LASER POINTER WITH THE APPLICATION OF SNELLS LAW.I UNDERSTOOD HOW TO FIND REFRACTIVE INDEX OF SUGAR SOLUTION IN THE EXPERIMENT.BUT I HAVE NO IDEA HOW TO FIND CONCENTRATION OF SUGAR FROM THE REFRACTIVE INDEX .WOULD YOU HELP TO SOLVE THIS PROBLEM.PLEASE[/u][/i]


You need to create a calibration curve with known sugar solutions. You should try to have 5 different solutions where you know the concentration. Then you measure the refractive index of these, and then you can make a graph of concentration vs. refractive index (this graph would probably be a line). Lastly, you take the unknown solution, and find where on the graph its refractive index is- then you can calculate exactly the concentration. Is this clear?

Louise

arun1390
Posts: 3
Joined: Sun Jul 22, 2007 6:39 am

CONCENTRATION OF SUGAR

Postby arun1390 » Mon Jul 23, 2007 10:43 am

[color=olive][/c olor]



THANKS A LOT LOUISE . I UNDERSTOOD IT CLEARLY. :D
your answer

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

Re: CONCENTRATION OF SUGAR

Postby Louise » Mon Jul 23, 2007 10:54 am

arun1390 wrote: [color=olive][/c olor]



THANKS A LOT LOUISE . I UNDERSTOOD IT CLEARLY. :D


Great! Good luck with your project!

Louise


Return to “Physical Science”