100 90 80 NANO3 70 60 CaCl2 50 Pb(NO3)2 40 KCI NaCl 30 20 KCIO3 10 10 20 30 40 50 60 70 80 90 100 Temperature (°C) If the solubility of potassium nitrate at 20 °C is 37 g per 100g of water, how many grams of the compound will dissolve in 1.0 mL of water? 1) 37 g 2) 3.7 g 3) 0.37 g 4) 0.0037 g 5) 370 g Solubility (g solute in 100 g H2O) KNO3 SONY K,Cr¿O7

1. CL was tasked to identify the white solid inorganic salt that Dr. Yang gave her. From her preliminary tests, the possible identities were narrowed down to the following: Zn(CN)₂ Ksp (30°C) = 7.30 x 1012 AgSCN Ksp (30°C) = 5.90 × 10 11 CL chose to investigate the solubility equilibrium of this salt and determine its identity. To a 100.0 mL distilled water at room temperature, CL added the unknown reagent until it no longer dissolves. After letting the mixture stand for 15 mins, she filtered and collected the filtrate in another beaker. From this, a 20.00 mL aliquot was drawn and was titrated with 10.20 mL of 5.00 x 10 M HCI to reach the phenolphthalein endpoint. A. Let X be the titratable species from the dissolved salt. Determine the concentration of X from the titration data. B. Based on the results of CL's experiment and the provided constants, what is the likely identity of the unknown salt? Show complete solutions to support your answer. When she submitted her report to Dr.…

1/T (K-¹) 2 N₂O5(g) → 4NO2(g) + O₂(g) K(S-¹) 4.87 x 10-3 1.50 x 10-³ 4.98 x 10-4 1.35 x 10-4 3.46 x 10-5 7.87 x 10-7 T (K) 338 0.0030 328 0.0030 318 0.0031 308 0.0032 298 0.0034 273 6.0037 The data in the table above provide the temperature dependence of the rate constant for the reaction shown. Complete the table with required information to 2 significant figures each. - a=-12571.42 In K, no units 5.3 - 6.5 7.6 8.9 Carefully construct a neat and well labelled graph/plot of In K (y-axis) versus 1/T (x-axis) in the appropriate quadrant (s), using EXCEL or the template below; then determine the slope and activation energy, Ea for the given reaction. Recall that the Arrhenius Equation is represented in a more useful form as In K= In A- (Ea/RT) & R= 8.31 x 10-³ kJ/mol-K. Determine by calculation, the value of Ea in kj/mole given that, slope = -E/R slope: - Ca = slope & - Ga= €ag Ea=-(-12571.42) x (8.3) x 10 Rg/mol-K) Ea=104.47 kj/md 10.3 - 14.1 Y = (-14.1)-(-5.3) = -8.8 x = (0.0037) -…

Solubility Curves of Selected Compounds 150 140 130 120 110 100 NaNO 90 3 80 70 60 NHC 50 40 Naci 30 20 KCIÓ, 10 Ce(sO 20 30 40 50 60 70 80 90 100 Temperature (C) At one point, ammonia and potassium nitrate have the same solubility. At that point the solubility of the compounds is: O 77 g/100 g water O 44 g /100 g water O 40 g/ 100 g water O 25 g/100 g water 1 4 8. 9 DELL %23 Grams of solute

SUBJECT : GENERAL CHEMISTRY 2  TOPIC : THE SOLUTION PROCESS AND FACTORS AFFECTING SOLUBILITY

What is the solubility of Ca3(PO4)2 Ksp = 1.3 x 10-32 in a 0.048 M Ca(NO3)2 solution? 5.4 x 10-15M , 1.1 x 10-14 M, 2.6 x 10-16 M, 2.9 x 10-29 M

Pseudogoutis caused by the formation of calcium diphosphate (Ca2P2O7) crystals in tendons, cartilage and ligaments, usually occurring if diphosphate levels in blood plasma 7   become very If the [Ca2+] in blood plasma is 9.2 mg/dL and Ksp for Ca2P2O7 is 8.64 x 10-13, what is the minimum concentration of diphosphate P2O 4- necessary for precipitation?

An impure sample of 250 mg of adipic acid was recrystallized from 2.0 mL of boiling water. The solution was cooled to room temperature slowly and further cooled in an ice bath. What is the maximum amount of recoverable adipic acid at 0 oC? Solubility of adipic acid at 0 oC is 0.3 g/ 100 mL Group of answer choices 6 mg 249 mg 244 mg 250 mg

Consider the solubilities of a particular solute at two different temperatures. Temperature (C) Solubility (g/100 g H,O) 20.0 41.3 30.0 71.3 Suppose a saturated solution of this solute was made using 77.0 g H,O at 20.0 °C. How much more solute can be added if the temperature is increased to 30.0 °C? mass: g * TOOLS x10

At 90°C, if 51 g of potassium chloride are completely dissolved, the solution is considered to be SOLUBILITY CURVES KI 140 130 120 100 NONO, KNO3 90. HCI, 70 NH CI 60 KCI 50 40 Naci KCIO, 30 20 10 O 10 20 30 40 50 do 70 80 9o 100 TEMPERATURE °C A. supersaturated B. saturated C. uncool GRAMS OF SOLUTE /100g H,0