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- If you dissolve 50 g of NH4Cl at 30 0C, how much NH4Cl will be left undissolved or precipitate out of the solution?14. Describe the solubility behavior of each of the following compounds: (a) Proline (an amino acid) (b) Aniline (c)ChlorocyclopentaneAccount for the solubility behavior of acetic acid, benzoic acid and sodium benzoate based on their chemical structures
- Your TA gives you a solution of chlorophyll, the green pigment found in plant cells. Can you use the standard curve for betacyanin to determine the concentration of chlorophyll in this solution? Briefly explain why or why not.1. You are given a substance that is equally soluble in water and hexane (two immiscible solvents). a) What is Kp? b) If you start with 10 g of the substance dissolved in 100 mL of water and are given 100 mL of hexane to extract with, algebraically show that it is better to do two smaller extractions using 50 mL of hexane for each extraction than it is to do one extraction using 100 mL of hexane.During the investigation, the student found that the size of the sugar also effects the solubility of the sugar. Give one inference for the above observation. *
- Part C - Acid-base and solubility equilibria 1. Rinse 4 regular size test tubes and a 10 mL measuring cylinder thoroughly with water. Number the test-tubes from 1 to 4 in a test tube rack. 2. Into each of test tubes 1 – 3 put a small amount of solid benzoic acid (put the same amount – about the size of a pea – in each test tube). 3. Add 2 mL (use the measuring cylinder) of water to tube 1 and shake to mix the contents. 4. Add 2 mL (measuring cylinder) of 2 M HNO, to tube 2 and shake to mix the contents. 5. Rinse the measuring cylinder with water, then use it to add 2 mL of 2 M NaOH to tube 3 and shake for about 10 seconds to mix the contents. Rinse the measuring cylinder. 6. Pour about half of the solution from tube 3 into tube 4, than add 2 mL of 2 M HNO3 to tube 4. 7. Allow the test tubes to stand for 2 or 3 minutes then record the appearance of the mixtures in each test tube. 8. Answer the questions on the results page relating to this equilibrium system. Results Test tube…ннн о H-с-с-с-с-он Н-с-с-с-с HHH O-H butyric acid (2) miscible HHHH 2. Consider the two molecules shown here. The solubilities of each in water is given. a) What is "solubility"? What does the solubility value given for (1) here mean? HHHH 1-butanol (1) 7.3 g/100 mL b) Please explain, based on their structures, why the solubility of (2) is greater than the solubility of (1) in water. For a complete answer, you should start with the types of IMFS involved in the different parts of the dissolving process. You should also use the kind of reasoning from class regarding the contributions to AHsolution and (briefly) the roles of energy and entropy in dissolving a solute in a solvent.How will Le Chatlier’s Principle be used to? Cause an insoluble salt to become more soluble
- When 635 grams of PbCl2(s) are placed in 2 L of water, what mass (in grams) of PbCl2 will dissolve? Kp(PbCl2) = 1.17 x 10-5 Molar mass of PbCl2 278.1 g/mol Round your answer to the nearest whole number and do not include units with your answer.why is isopropanol soluble in NaHCO3?12. If 50 g of Potassium Chloride (KCl) is added to 100 mL of water at 30ºC will all of the KCl dissolve?