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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HF(g) + H,O(1) H,0*(aq)+ F"(aq) K = 1.1 x 10-3 F (aq) + HF(g) HF;(ag) K= 2.6 x 10- a. Is fluoride in pH 7.00 drinking water more likely to be present as F"(aq) or HF2 (aq)? O HF2 (aq) O F(aq) b. What is the equilibrium constant for this equilibrium? Number 2 HF(g) + H,0(1) H,0*(aq) + HF, (aq) c. What are the pH and equilibrium concentration of HF2" in a 0.150 M solution of HF? (HF, - Number Number pH = M Check Answer View Solution
3.1 9 (a) Define and write the expression of Kw for the dissociation of water (H₂O). Kw is the Kw = of (b) Calculate the pH of 0.1 mol dm³ potassium hydroxide (KOH(aq)) pH =
Tamples of NaP (a) and NIL,CI () re dissolved n separate beakers that each contan 100 ml.of water One of the salts produces a slghtly ackde sotion which of the fulowing quatens best represents the formation of the slightly acide solution Na' (ag) + 21,0() NaOH (ag) + H,0 (ag) F (ag) + H,O()HP(ag) +OH (ag) c) NH, (ag) + H,0 ()= NH, (ag) + H,0" (ag) CI (ag) + H,0() HC(og) + OH (ag)
Calculate the equilibrium concentration of Ag*(aq) in a solution that is initially 0.110 M AgNO3 and 0.700 MNH3, and in which the following reaction takes place: Ag(NH,);(aq) Ag* (aq) + 2NH₂(aq) - (K-1.70x107) x 10 M Agt- H
The surface water of a lake is at pH = 7.9 and contains 10-2.9 M dissolved inorganic carbon (i.e., TOTCO,). (a) What is the alkalinity of this water? (b) Is the water undersaturated or oversaturated with atmospheric CO,? (c) If the water equilibrates with the atmosphere, what will the final alkalin- ity, pH, and dissolved inorganic carbon concentration be?
An acid-base indicator, HIn, dissociates according to the reaction shown in an aqueous solution. Ka, Hin HIn(aq) In (aq) + H*(aq) The protonated form of the indicator, HIn, has a molar absorptivity of 2039 M-' -cm¬l and the deprotonated form, In¯, has a molar absorptivity of 13970 M-' -cm-' at 440 nm. The pH of a solution containing a mixture of HIn and In- is adjusted to 6.04. The total concentration of HIln and In¯ is 0.000123 M. The absorbance of this solution was measured at 440 nm in a 1.00 cm cuvet and was determined to be 0.781. Calculate pK, for HIn. pKa, Hln =
Q.1 -8 K, for HCO3 = 2.38 × 10 Calculate Ka for the conjugate acid ( H¿CO;) For the reaction : H2CO3(aq) + H2O(aq) HCO3 (aq) + H3O'(aq) Q.2 The molar solubility for Mg3(PO.); is 3.5 × 106M. Calculate the K, of Mg;(PO4)2 for the reaction: Mg:(PO4)2 (s) = 3 Mg* (aq) + 2PO,* (aq) The K, expression is: Ksp = [Mg²+ ]³ [PO4³ j²
For water having a total alkalinity of 1.00x10^-3 mol/L and a pH of 10.34 what is the percentage contribution to alkalinity from CO32-? Please answer very soon will give rating surely
Prelaboratory Assignment: Qualitative Analysis Group I Cations 1. Write balanced equations describing each of the reactions in the experiment. I
Calculate the equilibrium constant (Kc) for the following reaction: CH3COOH(aq) + OHlaq))= CH3CO0 (aq) + H2O() The K, of acetic acid is 1.75 x 105; and Kw, (H2O(1) + H20() HO (aq) + H30*(aq)) for auto-ionization of water = 1x 10 14 Hint: First write the equilibrium expressions for acetic acid and the authorization of water separately then apply manipulation rules of Kand find the answer) BIU A- A 工E三 xx,三三 12pt Paragraph
3.1 9 (a) Define and write the expression of K for the dissociation of water W (H₂O). K is the Kw (b) Calculate the pH of 0.1 mol dm3 potassium hydroxide (KOH (aq pH = of 3.2 10. Explain briefly the effect of temperature on K.
2 litre carbogen (at S.T.P.) is passed through a solution of lime water to get 0.5 g white precipitate. The percentage of carbon dioxide gas in carbogen by volume is(a) 8 (b) 11.2(c) 5.6 (d) 22.4

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