Question

How to determine the concentration of vitamin C in the tea experimently by using HPLC?

How to determine the concentration of vitamin C in the tea experimently by using HPLC?
Engineering   Chemical-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
What is the concentration of the Vitamin C standard solution that you are making? Using the...
What is the concentration of the Vitamin C standard solution that you are making? Using the analytical balance in the instrument room, carefully weigh out about 125 mg of Vitamin C and place it in a 100-mL beaker in approximately 50 mL of water. It is not necessary for you to have exactly 125 mg, but it is important for you to know exactly how many mg you do have, and to make sure none of it is lost in...
In this lab, we are trying to determine the concentration of caffeine in caffeinated beverages using...
In this lab, we are trying to determine the concentration of caffeine in caffeinated beverages using high pressure-liquid chromatography (HPLC) and UV absorbance detector. Why is it important that the pressure remain constant during an HPLC run?
An alternative titration method for determining the concentration of vitamin C in a sample is to...
An alternative titration method for determining the concentration of vitamin C in a sample is to use an iodine solution. In this reaction iodine oxidizes the ascorbic acid to C6H6O6. A 20.00 mL sample of a 1.00 mg/mL vitamin C solution is placed in a flask along with 1 mL of a 1% starch solution to serve as an indicator. A dilute solution of iodine is placed in a buret. A titration is performed using the intense blue color produced...
In this lab, we are trying to determine the concentration of caffeine in caffeinated beverages using...
In this lab, we are trying to determine the concentration of caffeine in caffeinated beverages using high pressure-liquid chromatography (HPLC) and UV absorbance detector. Why was a dector wavelength of 284 nm chosen? How would changing the dector wavelength to 190 nm impact the sensitivity of the method for caffeine?
There is a solution mixed caffeine and methanol . Using HPLC, we have to know the...
There is a solution mixed caffeine and methanol . Using HPLC, we have to know the concentration of caffeine. 1.What kind of detector i use and why? 2. What kind of column i use and why?
Please comment on ANALYSIS TIME between using HPLC and GC
Please comment on ANALYSIS TIME between using HPLC and GC
Currently the tea market is in equilibrium at price $4.00 per bag of tea and 100,000...
Currently the tea market is in equilibrium at price $4.00 per bag of tea and 100,000 bags of tea. Now, suppose a new method of picking tea leaves reduces the labor cost of picking tea leaves by 30%. This new method will lead to a 20% change in the equilibrium price of tea. The Price Elasticity of Demand (Ed) for Tea has been calculated to be 1.10. The Price Elasticity of Supply (Es) for Tea has been calculated to be...
Researchers want to determine the effectiveness of heavy doses of vitamin C on colds. A random...
Researchers want to determine the effectiveness of heavy doses of vitamin C on colds. A random sample of 407 individuals took heavy doses of vitamin C and a random sample of 411 individuals took placebos. In the group who took vitamins, 105 of the participants had no colds throughout the study. In the placebo group, 76 of the participants had no colds throughout the study. At a 5% significance level, test to see if there is good evidence that the...
How much ice is needed to make ice tea at a temperature of 5 degrees C...
How much ice is needed to make ice tea at a temperature of 5 degrees C from 140 grams of hot tea at 65 degrees C contained in a glass container of 50 gm with specific heat equal to 0.2 cal/gm degree C. Treat the tea as colored water. Given: Initial tea temp is 65 degrees C, Initial weight of tea us 140 grams, Mass of container is 50 grams, Specific heat of container is 0.2 cal/gm degree C Find:...
A Solphadine tablet was analysed by HPLC in order to determine the quantity of caffeine. One...
A Solphadine tablet was analysed by HPLC in order to determine the quantity of caffeine. One tablet (0.3478g) was dissolved in water and made up to 200 mL. Caffeine standards were prepared from a stock solution of 100mg/ 100mL of caffeine. 10, 20, 30, 40, and 50 mL aliquots were taken and made up to a final volume of 100 mL in water. The standards and tablet sample were injected into the HPLC using a 20?L injection loop. The separation...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT