A) Generate a graph of ln Ksp vs 1/T (K) and find the best-fitting line.  This line equation will give you the slope, which is -∆H˚/R and an intercept of ∆S˚/R. B) Determine ∆G˚ at 298K Borax is also useful as a water softener.  Hard water is caused primarily by the presence of magnesium and calcium ions, which enter the water supply from minerals (calcite, gypsum and dolomite) within an aquifer.  Hard water will form deposits that clog drains.  Borax will react with these ions in a single replacement reaction releasing free sodium ions, which do not react with water and produce deposits.   C: Write a balanced chemical equation for the reaction of Borax with calcium and magnesium ions to produce an insoluble product that will in effect, remove these ions from the water supply, thereby 'softening' the water. Please help with parts A B and C

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...
icon
Related questions
icon
Concept explainers
Question

A) Generate a graph of ln Ksp vs 1/T (K) and find the best-fitting line.  This line equation will give you the slope, which is -∆H˚/R and an intercept of ∆S˚/R.

B) Determine ∆G˚ at 298K

Borax is also useful as a water softener.  Hard water is caused primarily by the presence of magnesium and calcium ions, which enter the water supply from minerals (calcite, gypsum and dolomite) within an aquifer.  Hard water will form deposits that clog drains.  Borax will react with these ions in a single replacement reaction releasing free sodium ions, which do not react with water and produce deposits.  

C: Write a balanced chemical equation for the reaction of Borax with calcium and magnesium ions to produce an insoluble product that will in effect, remove these ions from the water supply, thereby 'softening' the water.

Please help with parts A B and C

Borax, sodium tetraborate decahydrate, is an important mineral found in dry lake beds in California. Borax is used to make soap and glass, and
also as a preservative. The AH°, AS°, and AG° for the dissolution of borax can be determined using the values of Ksp of borax at different
temperatures.
In the following reaction borax dissociates into sodium and borate ions and water.
NazB4O5(OH)4 ·8H20(s) → 2Na*
(aq)
+ B4O5(OH)4 6
(aq) + 8H2O)
The following table lists Ksp values for the dissolution of borax at several temperatures.
Temperature (C)
Ksp
40.0
0.041
45.0
0.083
50.0
0.264
55.0
0.486
60.0
0.552
Transcribed Image Text:Borax, sodium tetraborate decahydrate, is an important mineral found in dry lake beds in California. Borax is used to make soap and glass, and also as a preservative. The AH°, AS°, and AG° for the dissolution of borax can be determined using the values of Ksp of borax at different temperatures. In the following reaction borax dissociates into sodium and borate ions and water. NazB4O5(OH)4 ·8H20(s) → 2Na* (aq) + B4O5(OH)4 6 (aq) + 8H2O) The following table lists Ksp values for the dissolution of borax at several temperatures. Temperature (C) Ksp 40.0 0.041 45.0 0.083 50.0 0.264 55.0 0.486 60.0 0.552
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps with 1 images

Blurred answer
Knowledge Booster
Molecular Motion in Gases
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY