In an experiment for determining the concentration of nitric acid solution, 8.50 ml of 0.10 M NaOH solution was needed for the titration of 10.0 mL of nitric acid solution. The volume of NaOH solution needed for blank titration was 0.50 mL. Calculate the
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Q: A 0.9600 M NaOH solution was diluted with a factor of 4. Then the diluted solution of NaOH was…
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- d. All of these. 9. Concentration of the stock solution is 0.30m. Howmuch of it would have to be diluted to the totAl of 10:00ml to get the conc of O. 0005m? a) n ml b) 17 microL c)17 mol1. A solution contains a mixture of Na2CO3 and NaOH. Using phenolphthalein indicator 25 mL of mixture required 19.5 mL of 0.995 M HCl for the endpoint. With methyl orange, 25 mL of solution required 25 mL of the same HCl for the endpoint. Calculate grams per liter of Na2CO3 in the mixture. a.23b.36 c.78 d.112. A 1.2040 g sample containing sodium carbonate and inert material was dissolved in water and titrated to methyl orange end point, requiring 32.50 mL of 0.1020 M HCl. Calculate the %Na2CO4 in the sample. a. 93.36% b. 14.59% c. 12.75% d. 23.41%3. A 0.1510 g KHP (MW = 204.22 g/mol) sample required a volume of 57.04 mL of NaOH solution to reach a phenolphthalein end point. Calculate the molarity of NaOH titrant. a. 0.02593 M b. 0.006481 M c. 0.01296 M d. 0.01012 M1. Find the number of millimoles of solute in a. 226 ?? of 0.320 ? HClO4. b. 25.0 ? of 8.05 ? 10−3 ? K2CrO4. c. 6.00 ? of an aqueous solution that contains 6.75 ??? of AgNO3. d. 537 ?? of 0.0200 ? KOH. 2. Describe the preparation of a. 5.00 ? of 0.0500 ? KMnO4 from the solid reagent. b. 4.00 ? of 0.250 ? HClO4, starting with an 8.00 ? solution of the reagent. c. 400 ?? of a solution that is 0.0250 ? in I2, starting with MgI2. d. 200 ?? of 1.00% (?/?) aqueous CuSO4 from a 0.365 ? CuSO4 solution. e. 1.50 ? of 0.215 ? NaOH from the concentrated commercial reagent [50% NaOH (w/w), ?? ?? = 1.525]. f. 1.50 ? of a solution that is 12.0 ??? in K+, starting with solid K4Fe(CN)6. 3. Exactly 75.00 ?? of a 0.3132 ? solution of Na2SO3 were treated with 150.0 ?? of 0.4025 ? HClO4 and boiled to remove the SO2 formed. a. What was the mass in grams of SO2 that was evolved? b. What was the concentration of the unreacted reagent (Na2SO3 or HClO4) after thereaction was complete?
- Two mililiters of 0.025M potassium iodate solution was used to standardize the sodium thiosulfate used in determining dissolved oxygen. if 19.4mL of the sodiim thiosulfate was used, what is the exact concentration of the sodium thiosulfate solution? 0.0154M 0.0232M 0.0013M 0.0028M1. The freezing point of a solution which contains 1.00 g of a non-electrolyte unknown compound A dissolved in 10.0g of benzene is 2.07 OC. The freezing point of pure benzene is 5.48OC. The molal freezing point depression constant of benzene is 5.12 OC/molal. What is the freezing point depression? 2. If the “D” value of 1% Atropine sulfate is 0.08 degrees Celsius, what is the freezing point depression of a 0.5% Atropine sulfate? 3. What volume of solution must be prepared with 42.0 g of solute to make 15.0% w/v solution?How of Capper C1) Suifcte pentchydate vere neeied many grams to malse I00 mL cf the 0.4M solution
- 1. What is pCl for a solution of 0.0345 M in ZnCl,? Type only the numerical value in standard form-four significant figures. 2. What is the ppm of the C,H0, if 3.0 mg of it found in 300 kg of drinking water? Type the numerical value in standard form with unit (ppm) - one significant figureWhy must the following analysis be conducted in bodies of water? c. Total hardnessA 6.00ml portion of an 8.00M stock solution is to be diluted to 0.400M. What will be the final volume after dilution?
- 10. A 0.514 gram sample of NazCO, (106.0 g/mol) was dissolved in distilled water in a 100.0 mi volumetric flask. The molar concentration of Na,CO, in solution is: 0.0485 M 0.0370 M b. 0.4849 M 0.0340 M 0.0330 M d. е.What volume of concentrated ammonia should be used to prepare 200 ml of 0.600 M solution?Purity 28% w/wdensity 0.9 g/mlAn unknown solution containing oxalic acid, which is titrated against sodium hydroxide. How many mole/s of titrant is needed to react with one mole of analyte?