One of your friends who likes gardening is attempting to make a solution that will increase some trace nutrients while also making the soil less acidic.* The planned solution will have the following concentrations: 0.03 M NaOH0.008 M CaCl28 x 10-12 M Fe(NO3)2 You're going to help your friend out by checking to see if anything will precipitate out of this solution. Your friend is particularly worried about Ca(OH)2 [Ksp = 6.5 x 10-6] and Fe(OH)2 [Ksp = 7.9x10-16]. Your friend thinks they have done the math correctly so that no precipitates will form, but they don't know anything about ionic strength corrections.(NOTE: Assume molality = molarity. There's probably not much of a difference.) a) Calculate the ionic strength of the solution.b) Calculate the activity of hydroxide ions, aOH- c) Calculate the activity of Ca2+ ions.d) Calculate the activity of Fe2+ ions.

Step 1: Step 2: Step 3: Step 4:

Answered: One of your friends who likes gardening…

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter14: Chemical Equilibrium

Section: Chapter Questions

Problem 14.97QE: According to the Resource Conservation and Recovery Act (RCRA), waste material is classified as...

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One of your friends who likes gardening is attempting to make a solution that will increase some trace nutrients while also making the soil less acidic.* The planned solution will have the following concentrations:

0.03 M NaOH
0.008 M CaCl₂
8 x 10^-12 M Fe(NO₃)₂

You're going to help your friend out by checking to see if anything will precipitate out of this solution. Your friend is particularly worried about Ca(OH)₂ [K_sp = 6.5 x 10^-6] and Fe(OH)₂ [K_sp = 7.9x10^-16]. Your friend thinks they have done the math correctly so that no precipitates will form, but they don't know anything about ionic strength corrections.
(NOTE: Assume molality = molarity. There's probably not much of a difference.)

a) Calculate the ionic strength of the solution.

b) Calculate the activity of hydroxide ions, a_OH-

c) Calculate the activity of Ca²⁺ ions.

d) Calculate the activity of Fe²⁺ ions.

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