When there is sufficient alkalinity, calcium hardness can be removed by adding lime, Ca(OH)2,according to the following stoichiometric precipitation reaction. According to this stoichiometricreaction, what concentration of Ca(OH)2 would have to be added to remove 40 mg/L of Ca2+from solution? (Hint: AW of Ca2+ = 40.0 g/mole).Ca(HCO3)2 Ca(OH)2⇒2CaCO3 + 2H2O

Determining the Concentration of Ca(OH)2 required We can solve this problem using the following…

Answered: When there is sufficient alkalinity,…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter15: Additional Aqueous Equilibria

Section: Chapter Questions

Problem 84QRT

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Similar questions

You are given four different aqueous solutions and told that they each contain NaOH, Na2CO3, NaHCO3, or a mixture of these solutes. You do some experiments and gather these data about the samples. Sample A: Phenolphthalein is colorless in the solution. Sample B: The sample was titrated with HCl until the pink color of phenolphthalein disappeared, then methyl orange was added. The solution became pink. Methyl orange changes color from pH 3.01 (red) to pH 4.4 (orange). Sample C: Equal volumes of the sample were titrated with standardized acid. Using phenolphthalein as an indicator required 15.26 mL of standardized acid to change the phenolphthalein color. The other sample required 17.90 mL for a color change using methyl orange as the indicator. Sample D: Two equal volumes of the sample were titrated with standardized HCl. Using phenolphthalein as the indicator, it took 15.00 mL of acid to reach the equivalence point; using methyl orange as the indicator required 30.00 mL HCl to achieve neutralization. Identify the solute in each of the solutions.
Does the pH of the solution increase, decrease, or stay the same when you (a) add solid sodium oxalate, Na2C2O4, to 50.0 mL of 0.015 M oxalic acid, H2C2O4? (b) add solid ammonium chloride to 75 mL of 0.016 M HCl? (c) add 20.0 g of NaCl to 1.0 L of 0.10 M sodium acetate, NaCH3CO2?
A solution contains 0.04900 M Ca²+ and 0.09100 M Agt. If solid Na3PO4 is added to this mixture, which of the phosphate species would precipitate out of solution first? When the second cation just starts to precipitate, what percentage of the first cation remains in solution? A solution contains 0.0490 M Ca²+ and 0.0910 M Agt. If solid Na3PO4 is added to this mixture, which of the phosphate species would precipitate out of solution first? O Ca3(PO4)2 Ag3PO4 O Na3PO4 When the second cation just starts to precipitate, what percentage of the first cation remains in solution? percentage: %
When 2.270 mol KOH is added to 1.00 L of 0.50 M Al(NO3)3 . After the aluminum nitrate has reacted with the potassium hydroxide aluminum ion concentration can be expressed with the scientific notation : [Al3+] = a x 10^-32 M. What is the value of Coefficient a? Report 1 decimal place . Kf= 3.0 x 10^33 fir Al(OH)4^-
A solution contains 0.0410 M Ca2+ and 0.0900 M Ag+. If solid Na3PO4 is added to this mixture, which of the phosphate species would precipitate out of solution first? Ca3(PO4)2 Ag3PO4 Na3PO4 When the second cation just starts to precipitate, what percentage of the first cation remains in solution?

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