At pil below about 35woon (Fe) oxidizes in streams according to the followingWater in a reservoir at 20°C has a pH of 7.7 and contains the following constituents:Constituent (g) + Conc. (mg/L)Ca2+38HCO3 abiotic oxid 183HOFerrous iron under these conditions and at 20°CisEstimate the activities of Ca2+ and HCO3-, using an appropriate equation to compute theactivity coefficients. (atomic weight: Ca 40)

To estimate the activities of Ca2+ and HCO3− follow these steps:Step 1: Convert Concentration to…

Answered: At pil below about 35 woon (Fe)…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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An aqueous waste stream that has a maximum concentrationof 0.50 M H₂SO₄ (d=1.030 g/mL at 25C) will be neutralized by controlled addition of 40% caustic soda (NaOH; d=1.430 g/L) before it goes to the process sewer and then to the chemical plant waste treatment facility. However, a safety re-view finds that the waste stream could meet a small stream of animmiscible organic compound, which could form a flammable vapor in air at 40.°C. The maximum temperature of the causticsoda and the waste stream is 31°C. Could the temperature in-crease due to the heat of neutralization cause the vapor to ex-plode? Assume the specific heat capacity of each solution is 4.184 J/gK.
ATP is synthesized from ADP, Pi, and a proton on the matrix side of theinner mitochondrial membrane. We will refer to the matrix side as the“inside” of the inner mitochondrial membrane (IMM).(a) H+ transport from the outside of the IMM into the matrix drives this process. The pH inside the matrix is 8.2, and the outside is more acidic by0.8 pH units. Assuming the IMM membrane potential is 168 mV (insidenegative), calculate ΔG for the transport of 1 mol of H+ across the IMMinto the matrix at 37 °C : H+(outside) → H+(inside).(b) Assume three mol H+ must be translocated to synthesize one mol ATPby coupling of the following reactions:ADP + Pi + H+(inside) → ATP + H2O (ATP synthesis)3H+(outside) → 3H+(inside) ( proton transport)Write the overall reaction for ATP synthesis coupled to H+ transport[and use this equation for part (c)]:(c) Assume three mol H+ must be translocated to synthesize one mol ATPas described in part (b) above. Given the following steady-state concentrations: ATP = 2.70…
The dissociation of the weak acid acetic acid (CH3COOH) is represented by the equation below. Enter the equation including all formatting and physical states in the answer blank. CH,COOH(ag) + H,0() – H,0*(aq) +CH,Coo"(aq) x | x. Me -. 8. (agi.
Calculate AG and the exponent value (the x of 10) for K, for the following reactions at 25°C: (a) Mg(s) + Pb²*(aq) = Mg²"(aq) + Pb(s) AG :-430.3 x: 75 (b) O2(8) + 4H (aq) + 4FE2"(aq) 2H,O(!) + 4Fe* (aq) AG :-177.5 x: 31 (c) 2Al(s) + 312(s) 2A1*(aq) + 6T (aq) AG 1280.4 x:23
How will Le Chatlier’s Principle be used to? Cause an insoluble salt to become more soluble
What is Keg for the following reaction: HPO42 (aq) + H3o*(aq) = H2PO4°(aq) + H2O(1) Some possibly useful equilibrium constants are: 0.0070, 6.1E-8, and 4.8E-13, for the K31, Ka2, and Ka3 of phosphoric acid.
app.101edu.co Question 16 of 25 A 185.0 mL sample of 1.200 M Pb(NO3), is mixed with 139.50 mL of 1.500 M NaCl, and the PbCl, precipitate is filtered from the solution. Then 200.0 mL of 3.000 M NaBr is added to the remaining solution, and the PbBr2 precipitate is also collected and dried. What is the mass (in grams) of the PbBr2 precipitate, assuming the yield in each precipitation step is 100%? 1 3 6. 8. 6. +/- 2. LO
part c?
L_{2} is considerably more soluble in CC*L_{4}(1) than it is in H_{2}*O(1) At a certain temperature, the concentration of I_{2} in its saturated aqueous solution is 1.3*10^-3* M and the equilibrium achieved when I_{2} distributes itself between H_{2}*O and CC*L{4} is 12 (aq) rightleftharpoons 1 2 (CCL 4),; K = 85.5Part A: A 12.0-mL sample of saturated I_{2}(aq) is shaken with 12.0 mL of CC*L_{4} After equilibrium is established, the two liquid layers are separated. How many milligrams of will be in the aqueous layer? I_{2}
A solution is prepared by combining 20.00ml of 0.150 molar Ba2+ and 25.00ml of 0.125 molar Cl- Using concentrations and volumes above, determine if a precipitate will form when these solutions are mixed at 25C. Provide a calculation to support your answer, keep in mind the system is not at standard state. Ba2+ (aq) -560.77 kJ/mol Delta Gfo Cl- (aq) -131.228 kJ/mol Delta Gfo BaCl2 -1296.32 kJ/mol Delta Gfo
Acetic acid is a weak acid that dissociates into the acetate ion and a proton in aqueous solution: HC2H3O2(aq) + H2O(l) ↔ C2H3O2-(aq) + H3O+(aq). At equilibrium at 25 °C a 0.100 M solution of acetic acid has the following concentrations: [HC2H3O2]=0.0990 and [C2H3O2-]=1.33×10-3M, and [H3O+]=1.33×10-3M,. The equilibrium constant, Keq, for the ionization of acetic acid at 25 °C is __________.
The reaction between iodide ion, I, and I, to form triiodide ion, I;", is shown below. Calculate AG° for this reaction at 298 K. 1-(aq) + 12(aq) = I3¯(aq) K. = 721

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