Orthophosphate (PO4 3- ) is a soluble polyprotic acid capable of protonating/deprotonating up to 3 protons to produce aqueous H3PO4 0 , H2PO4 - , HPO4 2- and PO4 3- . The pKa values of the associated dissociation reactions are as follows: pKa1=2.1; pKa2 = 7.2; and pKa3 = 12.4. Here you are asked to construct the speciation diagram of orthophosphate showing the concentrations of each of the four orthophosphate species in the pH range 1 -14 for a solution with a total orthophosphate concentration of 0.005 M (i.e. 5 mM). To this end, derive the equations that describe the concentration of each species as a function of pH. You can assume that concentration = activity (i.e. no need for activity corrections).
Orthophosphate (PO4 3- ) is a soluble polyprotic acid capable of protonating/deprotonating up to 3 protons...
Phosphoric acid, H3PO4(aq), is a triprotic acid, meaning that one molecule of the acid has three acidic protons. Estimate the pH, and the concentrations of all species in a 0.500 M phosphoric acid solution. pKa1= 2.16 pKa2 = 7.21 pKa3 = 12.32 What's: H3PO4, H2PO4-, HPO4-2, PO4-3, H+ ,OH- , pH
Phosphoric acid, H3PO4(aq), is a triprotic acid, meaning that one molecule of the acid has three acidic protons. Estimate the pH and the concentrations of all species in a 0.300 M phosphoric acid solution. pKa1 pKa2 pKa3 2.16 7.21 12.32 [H3PO4]= M [H^+]= M [H2PO4 ^−]= M [OH^−]= M [HPO4 ^2−]= M pH= [PO4 ^3−]= M
Part 3: Working with the Titration Curve for a Polyprotic Acid and Strong Base Consider carbonic acid, H.CO, (which is polyprotic) - a) Write the multi-step dissociation equilibrium for this acid in water (ie, there should be three chemical dissociation stages connected by two equilibrium arrows, given below): b) Below is an idealized titration curve showing the exhibited pH for 25.00 mL of a 0.100 M aqueous carbonic acid solution as a function of added 0.100 M NaOH in units...
Based on the document below,
1. Describe the hypothesis Chaudhuri et al ids attempting to
evaluate; in other words, what is the goal of this paper? Why is he
writing it?
2. Does the data presented in the paper support the hypothesis
stated in the introduction? Explain.
3.According to Chaudhuri, what is the potential role of thew
alkaline phosphatase in the cleanup of industrial waste.
CHAUDHURI et al: KINETIC BEHAVIOUR OF CALF INTESTINAL ALP WITH PNPP 8.5, 9, 9.5, 10,...