I do not want someone to waste their time doing the calculations for me. I would just love to know which numbers to use for everything, and how to plug it in and calculate it and whatnot. I have just been sitting here dumbhfounded for days trying to figure out how to find the molarity of the known concentration. I have no idea which numbers to use for any of this stuff. Please help.
A. Properties of a System at Equilibrium In dilute solution, iron(III) nitrate, Fe (NO,)1 (aq), sodium thiocyanate, NaNOS g), are and follow completely dissociated. Whe these two solutions are mixed, equilibrium is established the Fest (aq) NCS (aq) FeNCS2 (aq) of the five ions in solution, Na (aq), NO1 (aa), and NCS (aq) are colorless Fest (aq) is almost colorless, but FeNCS2 (ag) is de red. hanges in the concentration of FeN are indicated by changes in the intensity of the color ofthe solution Add 1 mL of 0.20 M iron I) nitrate, Fe (NO3) and 2 mL of 0.20 M sodium thiocyanate, NaNCS, to 50. L of distilled water in a 100-mL ker, and stir the mixture. Divide this solution equally among four 16 x 150-mm test tubes. To one test tube add 2 mL of 0.20 M 1, to the second add 2 mL of 0.20 M NaNCS, and to the third add a few crystals of mercury(II) nitrate, Hg(No,)a. Shake the contents of each tube, and compare the resulting color of each tube with that of the fourth tube, which has been reserved as a standard. (The colors may be seen best when the tubes are held in front of a sheet of white paper.) Record your observations and account for the changes in the color that you observe in TABLE 15.1A
2. You know that the iron (III) ions will combine with the chloride ions to form an insoluble salt that precipitates out of solution. If you add a scoop of sodium chloride (NaCI) to the solution, it will
3. Now a milliliter of concentrated potassium nitrate (KSCN) solution is added to the solution, making it
4. You know that silver ions () will combine with thiocyanate ions (SCN) to form an insoluble salt (AgSCN) that precipitates out of solution. If you add silver ions to this solution, it will
5. You also know that this is an endothermic reaction. If you heat this solution to raise the temperature, it will
which is initially blood red in color. Answer the following questions in the equilibrium shifts and color changes that result from various chemical changes.
+ 
+ 
are added to the red solution as a result, the solution will 
will combine with the chloride ions 
to form an insoluble salt 
that precipitates out of solution. If you add a scoop of sodium chloride (NaCI) to the solution, it will
) will combine with thiocyanate ions (SCN) to form an insoluble salt (AgSCN) that precipitates out of solution. If you add silver ions to this solution, it will
