Lemon juice contains citric acid (C6H8O7). What speciesserves as a base when lemon juice is mixed with bakingsoda (sodium hydrogen carbonate) during the preparationof some lemon cookies?
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Lemon juice contains citric acid (C6H8O7). What species
serves as a base when lemon juice is mixed with baking
soda (sodium hydrogen carbonate) during the preparation
of some lemon cookies?
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- Explain why the blue color of starch-iodine complex disappears upon heating?What are the molarity and the normality of a solution made by dissolving 25 g of citric acid (triprotic, C6H5O7H3) in enough water to make 800 mL of solution?Carbon dioxide is dissolved in blood (pH 7.4) to form a mixture of carbonicacid and bicarbonate. Neglecting free CO2, what fraction will be present as carbonic acid? Would you expect a significant amount of carbonate (CO32-)?
- Organic polymers have a similar composition to that of common carbohydrates (predominantly composed of Carbon, Hydrogen and Oxygen atoms). By principle, some carbohydrates readily react with oxygen gas to produce carbon dioxide and water vapor, explain why this principle doesn’t spontaneously work on organic polymer wastes such as Polyethylene terephthalate (PET) and Polystyrene (PS)?a) A solution of amino acid having carboxylic side chain was titrated against NaOH. If initial pH of the solution was 2.8. Describe the state of the functional groups of the amino acid at the initial pH and at 10.5.b) Briefly explain how you will separate amino acids mixture using the charge difference between the amino acids.What is this lipid? What test wll identify this?
- People often take milk of magnesia to reduce the discomfort as- sociated with acid stomach or heartburn. The recommended dose is 1 teaspoon, which contains 4.00 x 102 mg of Mg(OH)2. What volume of an HCI solution with a pH of 1.3 can be neutralized by one dose of milk of magnesia? If the stomach contains 2.00 x 102 ml. of pH 1.3 solution, is all the acid neutralized? If not, what fraction is neutralized?Which of the following contains isoprene units?Cysteine is converted to cystine which is readily transported into mammalian cells. In the cells, cystine is converted back to cysteine, an essential amino acid needed to synthesize biomolecules such as proteins, or Coenzyme A3. What reagents would you choose to make the disulfide bond in the lab? Choose all that would produce the disulfide bond.
- When blood levels of glucose are higher than normal,glucose molecules react with protein side chains such as thatof lysine residues to produced glycated side chains. Explainwhy this process is dangerous. What is the name of the firstfunctional group that is formed during glycation?Which of the following organic compound doesnot dissolve in water? glycerol propane propanoic acid propanol H H-C Н Н H-с-с-с Н- OH HICIH H-C c-c 1 Н OH H -+ Н HICIH H Н H H C C H H OH 5-о-т OH -C-H -H OH-s/67365/take The image below shows the structure of a lipid. Which of the following statement is correct about the lipid shown in the image Stearic acid ННННННННННННННННН .................. Н-С-О-c-c-c-с-с-с-с-с-с-с-с-с-с-с-с-с-с-с-н Н Carboxylic acid group 10 glycerol ................. ННННННННННННННННН Онн .... H-C-0-c-c-c-c-c-c-c=С-С-С=С-С-С-С-С-С-c-С-Н ................ НННННННННННННННН НННННН | | | | | ОННННН ...... ns://canvas uts edu au/accoccmont Н-С-О-c-c-c-c-c-c-c=c-c-c=c-c-c-c-c-c-c-c-н |--1.... ... ... ... НННННННННННННННН hrefr | Н 5.000 (1 ННННННН |||||| Linoleic acid