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EDTA is utilized to slow microbial degradation of mayonnaise by preventing bacterial uptake of iron. Assuming that mayonnaise has a pH of 3.9 and a total iron content of 10-6 mole/liter, how much EDTA must be added to complex 99% of the total Fe? Assume that mayonnaise is an infinitely dilute aqueous solution and that complexation by ligands other than EDTA and hydroxyl ion is negligible. The stability constant for FeEDTA- is 1027.7. pKa values for H4ETDA are 2.3, 3.2, 6.4 and 10.9.
Please review the occurrence and cycling of calcium in nature, along with its use. Analyze and evaluate the article as to it's contemporary relevance regarding the elements availability, health implications and environmental impact.
What concentration of aqueous NaCl solution freezes at -15.2ºC? The freezing point of pure water is 0.0ºC and Kf of pure water is -1.86ºC/m.
If a heated metal block is placed into a beaker of water, what is the relationship between the final temperatures of the water and the metal block?
Identify the intermolecular forces present in each of these substances. HCl, He, CO, HF Match these to the correct groups below. Dipole-dipole and dispersion only, Dispersion only
which molecular species listed would be necessary for the formation of pentanol from the reaction of 4-methyl-2-pentene with sulfuric acid and water as the solvent
A blast furnace is the main unit in the production of iron from iron ore. One can view the blast furnace as a process in which the principal desired reaction is:
If 60mL of 0.1M CH3COOH is titrated with 0.2M NaOh, what will the pH be when: 1. Initial, before adding NaOH 2. 15mL of NaOH is added 3. 30mL of NaOH is added I worked the pH levels to 2.87, 4.74, and 10.21 (none, 15mL, 30mL NaOH).
Which of the following is less soluble in hexane, ethanol or CCl3H(l). Don't try to type the subscripts, just use letters and numbers.
A solution was prepared by mixing 0.01150 HA and 0.01150 mol of NaA in a 500 ml Volumetric flask and diluting to mark. What is the pH of the resulting solution
A semipermeable membrane is placed between the following solutions. Which solution will decrease in volume? Solution A: 1.31% (m/v) starch Solution B: 7.48% (m/v) starch
According to the following reaction, what amount of Al2S3 remains when 20.00 g of Al2S3 and 2.00 g of H2O are reacted? A few of the molar masses are as follows: Al2S3 = 150.17 g/mol, H2O = 18.02 g/mol.
solid silicon is converted into liquid silicon tetrachloride,SiCl4 , by treating it with chlorine gas. In the last step, is SiCl4 treated with hydrogen gas to give ultrapure solid silicon and hydrogen chloride
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