Question: Calcium fluoride, CaF2, is a very slightly soluble salt. In Example 17.4, we calculated its solubility from the solubility constant, assuming that the solubility equilibrium

Calcium fluoride, CaF2, is a very slightly soluble salt. In Example 17.4, we calculated its solubility from the solubility constant, assuming that the solubility equilibrium represented by Ksp was the only important one. However, a solution of the salt does contain the species HF. Where does this come from? Would you expect this to increase or decrease the solubility as we calculated it in the example? Using the fluoride-ion concentration that we calculated in the example, obtain the concentration of HF in the solution. From this, decide how important the formation of fluoride ion is in determining the solubility of calcium fluoride. Without doing any calculations, decide how important you think a similar effect would be in determining the solubility of calcium carbonate. Explain.

Step by Step Solution

★★★★★

3.47 Rating (160 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

The HF comes from the reaction of the conjugate base F with water Its formation should increase the ... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

806-B-M-L-S-M (1354).docx

120 KBs Word File

Students Have Also Explored These Related Organic Chemistry Questions!

The nose-wheel assembly is raised by the application of a torque M to link BC through the shaft at B. If the arm and wheel AO have a combined weight of 100 lb with center of gravity at G, find the...

Write the net ionic equation in which the slightly soluble salt lead(II) carbonate, PbCO3, dissolves in dilute hydrochloric acid.

Solid calcium fluoride (CaF 2 ) reacts with sulfuric acid to form solid calcium sulfate and gaseous hydrogen fluoride. The HF is then dissolved in water to form hydrofluoric acid. A source of calcium...

Compute the velocity of light in calcium fluoride (CaF2), which has a dielectric constant r of 2.056 (at frequencies within the visible range) and a magnetic susceptibility of -1.43 x 10-5.

Answer all questions completely(Table 1, 2, 3): Page 1 > of 19 ZOOM Experiment1 Chemical Reactions and Net Lonic Equations I. Objective: To predict the products of some displacement reactions and...

OBJECTIVES: In this experiment you will investigate the solubility of calcium iodate in solutions of varying amounts of added nitric acid (i.e. varying [H3O+]) and determine the solubility product...

applied chemical principles 1. Estimate the solubility of calcium curbonate at 25C in the presence of 0.09MCaCl (aq). [7] 2. Will BaSO4 precipitate from a solution containing 1.5104MBa+2, barium ion,...

Need help with this lab Experiment 12 - Solubility Product.docx Experiment 12. Solubility Product and Common Ion Effect Student Name (Print):__________________________ Pre-lab Study Questions (Submit...

a) The molar solubility of calcium fluoride, CaF2, is 2.1 10-4 mol L-1. From this we can calculate the Ksp of CaF2 to be a) 9.3 10-12. b) 1.9 10-11. c) 3.7 10-11. d) 8.8 10-8. b)What is the...

Problem 5: (10 points) a. Pure water is added to solid calcium fluoride (CaF2) to yield a saturated solution (i.e. a solid CaF2 phase remains after the addition of water). What will be the resulting...

Semans is a manufacturer that produces bracket assemblies. Demand for bracket assemblies ( X) is 130 units. The following is the BOM in indented form: Below is a table indicating current inventory...

Describe sunk costs. Are there circumstances in which sunk costs are relevant to decisions? Discuss.

you will write a brief action memo addressed to the hospital CEO in which you present a business case for the organization to implement a Discharge by Noon project. The memo should identify the top...

Write a simple UDP iterative server and client to convert a given DNS name (for example,www.google.com) into its IP address(es). The client will read the DNS name as a string from the user and send...

Various subfields of AI have held contests by defining a standard task and inviting re- searchers to do their best. Examples include the DARPA Grand Challenge for robotic cars, The International...

Discuss the effectiveness of a classified advertisement, as opposed to a singlesheet advertisement, in attracting quality students for work during academic vacations.

Entities and Attributes University consists of several faculties. Within each faculty there are several depafiments. Each department may run a number of courses. All academic staff are attached to...

Find objections to artificial intelligence that have been conveyed in popular press in academic papers. What are the fears that lie behind the objections that are put forward as argument against the...

All other things held constant, how would the market price of a bond be affected if coupon interest payments were made semiannually instead of annually?

Write the ground-state electron confi gurations for the following elements: Ge, Fe, Zn, Ni, W, Tl.

The electron configuration of a neutral atom is 1s22s22p63s2. Write a complete set of quantum numbers for each of the electrons. Name the element.

Which of the following species has the most unpaired electrons? S+, S, or S-. Explain how you arrive at your answer.

National Business Machine Co. (NBM) has $4 million of extra cash after taxes have been paid. NBM has two choices to make use of this cash. One alternative is to invest the cash in financial assets....

What were the objections to the formation of incorporated businesses, or the business corporation? a . that they would ultimately produce monopolies b . that they would stifle individual enterprise c...

Which aspect of graphs make you assume that lottery numbers are drawn at random meaning that each possible number combination is equally likely to be drawn? Graphs of the NY MEGA Millions data, 2002...