1. The height of three peaks; A, B, and C obtained in a gas chromatogram are 27.7 mm, 19.2 mm and 41.0 mm. The width of the peaks, at half height, are 4.9 mm, 4.7 mm and 4.6 mm, respectively. Calculate the percentage composition of C in the sample. Answer in : %
2. A gas chromatograph can be used to (more than one answer may be correct)
-determine the mass of a compound.
-determine the percentage composition of a mixture.
-purify large quantities of compounds.
-separate vaporizable compounds.
-separate nonvolatile compounds
1. The height of three peaks; A, B, and C obtained in a gas chromatogram are...
1.Calculate the specific rotation, [α], if the observed rotation is -24°, the concentration is 31 g/100 mL, and the cell length is 5 cm. Answer in :° mL/g/dm 2. The height of three peaks; A, B, and C obtained in a gas chromatogram are 27.7 mm, 19.2 mm and 41.0 mm. The width of the peaks, at half height, are 4.9 mm, 4.7 mm and 4.6 mm, respectively. Calculate the percentage composition of C in the sample. Answer in :...
1. The height of three peaks; A, B, and C obtained in a gas chromatogram are 27.7 mm, 19.2 mm and 41.0 mm. The width of the peaks, at half height, are 4.9 mm, 4.7 mm and 4.6 mm, respectively. 2.The optical purity of (+)-glucose in a mixture of (+) and (-)-glucose is 72%. What is the percentage of (+)-glucose in the sample? 3.Calculate the specific rotation, [α], if the observed rotation is -24°, the concentration is 0.4 g/mL, and...
You have obtained a gas chromatogram of a two component mixture of compounds A and B. The height of peak A is 3.42 cm. and the width at half height is 1.98 cm. The height of peak B is 3.58 cm. and the width at half height is 1.66 cm. The percentage of a component in the mixture is proportional to peak area. Estimate peak areas by multiplying height by width at half height. What was the percentage of compound...
5. Using the GC mentioned in question 4 and the values listed on the chromatogram for the height and width (at half height) of each peak, calculate the percent composition for each product (A, B and C). Be sure to show your work. (8 points) 6. The products corresponding to each peak on the GC are the ortho, meta, and para isomers of the nitrated product shown in the scheme for reaction 1. These isomers were isolated, and a proton...
c) Using your answers to question 5 and 6a, what percent of the mixture obtained in reaction 1 is the ortho isomer? d) What percent of the mixture obtained in reaction 1 is the meta isomer? e) What percent of the mixture obtained in reaction 1 is the para isomer? f) Could we have used Mass Spectrometry after the GC analysis (GC-MS) to identify which peak on the GC was which isomer? Why or why not? g) Could we have...
NEED HELP WITH B) C) D) E) F) and G) that apply to the spectra below. OTHER ANSWERS ARE THERE TO SUPPLEMENT Thank you! 5. Using the GC mentioned in question 4 and the values listed on the chromatogram for the height and width (at half height) of each peak, calculate the percent composition for each product (A, B and C). Be sure to show your work. Area of peak A = 125 x 8 = 1000mm2 Area of peak...
Separating a Mixture, Recrystallization, pre-lab assignment could you also explain why you chose that substance for the empty spaces and question marks EXPERIMENT 4 Pre-Lab Assignment Separating a Mixture, Recrystalliration Name Date 1. Complete the following flowchart which shows how to separate a mixture of sand, sodium chloride and acetanilide. Notice that after a separation process (a down arrow) the filtered solids are shown on the left and the filtrate (the liquid) is shown on the right. The terminal step...