why do we use the labdha max (nm) value when determining the spectra kinectics in a...
why do we use the labdha max (nm) value when determining the spectra kinectics in a methylene - ascorbic acid reaction, where ascorbic acid causes the methylene blue to become colorless?
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why do we use the labdha max (nm) value when determining the
spectra kinectics in a...
Why do we add chloroform-methanol solution (7+3, v/v) to oil when determining the peroxide value of...
Why do we add chloroform-methanol solution (7+3, v/v) to oil when determining the peroxide value of food lipid? we used IDF method and used spectrophotometric method to get the absorbance.
2.) When we take 1H or 13C spectra, we typically use CDCI3 as a solvent. What...
2.) When we take 1H or 13C spectra, we typically use CDCI3 as a solvent. What are the 'H and 13C chemical shifts for this compound? Why does it appear as a triplet in 13C spectra? (Hint: The nucleus of D has a spin of 1.) 3.) How many 13C NMR resonances do you expect for m-xylene and p-xylene, respectively? 4.) Look up the structure of isophorone. How many 'H NMR peaks (ignore splitting) do you expect for this compound?...
Elimination Reactions Prelab Date 1. Explain why we get a different product when we use bulky...
Elimination Reactions Prelab Date 1. Explain why we get a different product when we use bulky bases compared to smal bases. (3 pts) 2. If we start with 25.0 mL of 0.100 M sodium methoxide and 25.0 g of 2-bromobutane, what will be the theoretical yield of your product? (Use dimensional analysis/ Do not break up your steps/Read the beginning of your lab to guide you on how to do this problem). (3 pts) 3. How can one determine which...
When using a spectrometer to measure the absorbance as a function of concentration, why do we...
When using a spectrometer to measure the absorbance as a function of concentration, why do we have to plot our calibration curve at the maximum wavelength (lambda max)? I know it's to get the highest point of absorbance and therefore ensure high sensitivity, but how does it affect my answers on the calibration curve? what if I didn't use lambda max?
Why do we calculate terminal value when valuing a business?
Why do we calculate terminal value when valuing a business?
1. Use the diagram below (results of reduction kinetics of methylene blue) to help you answer...
1. Use the diagram below (results of reduction kinetics of methylene blue) to help you answer question i)-vi) pdo gainst [Asc) Kpseudo VS [HCI] 500 05 0.1 500 y-10352x-624.82 R 0.4968 1000 1500 [HCIl mol 1 b) i Determine the order of reaction of a) b) and c) ii) Use the slope of the graphs from (a) and (b) above as well as the fixed concentrations of the other reactants to determine the rate constants of the uncatalyzed (k) and...
when computing the cross product why do we use a -j instead of j?
when computing the cross product why do we use a -j instead of j?
3) Use the mole ratios contained in both equation 3 and equation 4 to calculate the...
3) Use the mole ratios contained in both equation 3 and
equation 4 to calculate the
volume (in mL) of 0.0100 M potassium iodate solution needed to
completely oxidize all
of the ascorbic acid contained in 20.00 mL of 0.0200 M
ascorbic acid solution.
concentration of the titrant can be used along with the mole ratios from the reaction equations to determine the amount of ascorbic acid in the solution Chemical Reactions involved with the redox titration: Equation 1 shows...
Why do we use a simplified model of supply and demand when studying basic economics?
Why do we use a simplified model of supply and demand when studying basic economics?
Why do we pant heavily when we exerting ourselves? Explain in terms of CO2, water, carbonic...
Why do we pant heavily when we exerting ourselves? Explain in terms of CO2, water, carbonic acid, energy, oxygen, H2O in plasma
2.) When we take 1H or 13C spectra, we typically use CDCI3 as a solvent. What are the 'H and 13C chemical shifts for this compound? Why does it appear as a triplet in 13C spectra? (Hint: The nucleus of D has a spin of 1.) 3.) How many 13C NMR resonances do you expect for m-xylene and p-xylene, respectively? 4.) Look up the structure of isophorone. How many 'H NMR peaks (ignore splitting) do you expect for this compound?...
Elimination Reactions Prelab Date 1. Explain why we get a different product when we use bulky bases compared to smal bases. (3 pts) 2. If we start with 25.0 mL of 0.100 M sodium methoxide and 25.0 g of 2-bromobutane, what will be the theoretical yield of your product? (Use dimensional analysis/ Do not break up your steps/Read the beginning of your lab to guide you on how to do this problem). (3 pts) 3. How can one determine which...
1. Use the diagram below (results of reduction kinetics of methylene blue) to help you answer question i)-vi) pdo gainst [Asc) Kpseudo VS [HCI] 500 05 0.1 500 y-10352x-624.82 R 0.4968 1000 1500 [HCIl mol 1 b) i Determine the order of reaction of a) b) and c) ii) Use the slope of the graphs from (a) and (b) above as well as the fixed concentrations of the other reactants to determine the rate constants of the uncatalyzed (k) and...
3) Use the mole ratios contained in both equation 3 and
equation 4 to calculate the
volume (in mL) of 0.0100 M potassium iodate solution needed to
completely oxidize all
of the ascorbic acid contained in 20.00 mL of 0.0200 M
ascorbic acid solution.
concentration of the titrant can be used along with the mole ratios from the reaction equations to determine the amount of ascorbic acid in the solution Chemical Reactions involved with the redox titration: Equation 1 shows...
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