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- КНР (ад) + NаОН (ад)- - NAKHP (aq) + H20 (1) Trial V; (mL) V; (mL) 33.87 45.73 2 A student masses out 1.019 grams of KHP, which is dissolved in 25.00 mL of DI water. This KHP solution is titrated with NAOH, as shown in the equation above. Calculate the molarity of the NaOH solution. RE FS F6 F7 FB F10A solution of HCl was titrated against sodium carbonate. What is the average normality of acid in the given data? (MW Na₂CO3 = 106) T2 0.3479 0.3562 0.3042 Weight (g) Initial V (ml) 0.80 1.60 35.20 36.70 39.80 Final V (mL) Vol HCl used (mL) 35.10 39.40 N of HCl (eq/L) 0.1954 0.1870 Average N of HCl (eq/L)Gravimetric determination of Ksp. Table 1 Trial Volume of solution used (ml) Mass of empty beaker (g) Mass of beaker with solid residue (g) Mass Ca(OH)2 (g) Ksp for Ca(OH)₂= % error = 10mL 92.808g 92.766g 0.042g Determine the mass of dissolved solid that was in the saturated solution. Calculate the molar solubility of the solution (M) using the mass of dissolved solid, the volume of solution used in the analysis, and the molar mass of calcium hydroxide. Substitute the molar solubility into a version of equation 4.1 [Hint: use an ICE table] to determine the Kp. Provide an annotated calculation below: 1
- 1.5m 6A 200. mL solution that is 6.7 x 104 M in Cu²+ is mixed with 0.30 mole NH3. There is no change in volume as NH3 is bubbled in. What is the final [Cu]? Kf Cu(NH3)42 = 5.6 x 10¹¹ 124 . Kover= ksp kf 5." -9 Cu2++NH₂ CU(NH3) 4² 2+In this station, you will find a sample of table salt; the chemical formula of table salt is NaCl. Using the balance, weigh out 6.00 g of NaCl and dissolve in 50 mL of deionized (d.i.) water. Once com-pletely dissolved, add additional d.i. water to make the final volume of solution 100.0 mL. What is the mass percent NaCl in the solution? What is the molarity of the solutionThe following data were collected for the reaction 2A + 2B + C 3G+ 4 F Experiment 2 3 4 5 [A] Units of Molarity .00125 .00250 .00125 .00125 .00301 [B] Units of Molarity 00125 .00125 00302 00302 .00100 [C] Units of Molarity 00125 .00125 .00125 00375 .00115 Rate Units M/s 00870 .0174 .0508 .457 a. What is the order with respect to each reactant and what is the overall order for the reaction? Answer this question within the answer box and show your work clearly labeled on the scratch paper. b. Write the rate law for the reaction. Answer this question within the answer box and show your work clearly labeled on the scratch paper. c. What is the value and units for k? Answer this question within the answer box and show your work clearly labeled on the scratch paper. d. Predict the rate for experiment 5, you should give a value and units. Answer this question in the answer box and show your work on the scratch paper labeled clearly.
- A 10.0 g sample of KC3H504 (A)(MW = 204.23 g A) was titrated with 50.00 mL of KOH (B) to endpoint. What is the molarity of the KOH solution? Use A and B to show compounds in the working. Given: KCgHsO4 (s) + КОН (аq) ----> K2C8H4O4 (aq) + H2O (1I) 1. 10.0 g Ax 3. 5. 7. 9 2._ 4. X 6. 8. 1.--- 2.__--- 3._---- 4._- 5. A 6.. A wastewater treatment plant discharges 10 MGD effluent containing 200 mg/L ultimate BOD into a stream flowing at 90 MGD with ultimate BOD of 5 mg/L. The deoxygenation constant, kd, is 0.12/day. (a) What is the ultimate BOD (BOD) remaining in the stream at a distance of 10,000 m downstream if the stream flows at a constant speed of 0.10 m/s? (b) What should be the treatment plant effluent BOD. (CW) in mg/L if the ultimate BOD, at 10,000 m downstream cannot exceed 5 mg/L?grammarly-G X * Content oard.odu.edu/ultra/courses/_393452_1/cl/outline F2 Question Completion Status: X GA student wan X 1 QUESTION 3 A student wants to determine the solubility of water and copper (1) bromide (a green solid) in ethyl acetate (a colorless organic liquid). She places 1 mL of ethyl acetate into each of two test tubes. To one, she adds 5 drops of water to it. To the other, she adds a small scoop of copper(1) bromide. 8.0 F3 2 - Which test tube represents the ethyl acetate and A. Test tube 1 copper(1) bromide if the copper(1) bromide is insoluble in ethyl B. Test tube 2 acetate? C. Test tube 3 D. Test tube 4 - Which test tube represents the mixture of the ethyl acetate and water if the water is insoluble in ethyl acetate? $ Question Com X C Chegg Search x 3 Which test tube represents the mixture of the ethyl acetate and water if the water is soluble in ethyl acetate? - Which test tube represents the ethyl acetate and copper(1) bromide if the copper(1) bromide is soluble…
- A 22.41 mL of NaOH solution is required to reach the phenolphthalein endpoint in the standardization with 0.276 g of solid, monoprotic primary standard acid (MW 128.33) in a 25.00 mL solution. 12.34 mLof the same NaOH solution was added to titrate 5 mL of vinegar solution to the endpoint. Calculate the mass of acetic acid in this vinegar solution (d = 1.005 g/mL).44). Calculate the solubility of Pbl2 in moles/L in pure water at 25 °C. The Ksp for Pbl2 is 9.80 x 10-9 at 25 °C. Use 3 Sif. Fig. in the answer. а. 9.80 х 10-9 М d. 4.95 x 10-5 М b. 0.00135 M e. none of the above с. 9.80 х 105 МSample 1 2 3 4 Sample Volume, mL 50.00 49.50 25.00 50.00 Ba(OH)2 Volume, mL 43.17 42.68 21.47 43.33 A 0.1475-M solution of Ba(OH)2 was used to titrate the acetic acid (60.05 g/mol) in a dilute aqueous solution. The above results were obtained. 1. Calculate the mean w/v percentage of acetic acid in the sample 2. Calculate the standard deviation for the results. 3. Calculate the 90% confidence interval for the mean. 4. At the 90% confidence level, could any of the results be discarded?