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M Please select file(s) Select file(s) Q5.2 15 Points A 50.0 mL HBr (aq) solution is...
4 points What is the pH of 50.0 mL of a 0.045 M HBr solution? editorify
8. (3 points) A 45.00 mL aliquot of a carbonic acid solution is titrated with 41.82 ml of a 0.4522 M sodium hydroxide (40.00 g/mol), What is the molar (HCO, 62.03 g/mol) in the solution? concentration of carbonic acid H2co +2 NaoH Na,Co,+2 H20 (6 points) Fill in the chart below: (give concentrations to 3 sig figs and pH and pOH to 3 places after the decimal.) 9. 5.74 x 10-11 M 9.731 10. (2 points) Draw an example of...
please help!! thank you 11.5 g of KOH (s) is dissolved up to 250.0 mL in water. What is the molarity of this solution? Molarity of first solution: Enter your answer here M KOH If we then add an additional 2.750 L of water to the solution what is the new molarity? Molarity of second solution: Enter your answer here M KOH For this second solution calculate the pH, pOH and [H3O+). pH = Enter your answer here pOH =...
11.5 g of KOH (s) is dissolved up to 250.0 mL in water. What is the molarity of this solution? Molarity of first solution: Enter your answer here M KOH If we then add an additional 2.750 L of water to the solution what is the new molarity? Molarity of second solution: Enter your answer here M KOH For this second solution calculate the pH, pOH and [H3O+). pH = Enter your answer here pOH = Enter your answer here...
6) A stock solution of HCl is 11.50 M, if 15.29 ml of the stock solution is diluted with water to a total volume of 5.000 L what is the pH, POH, [H3O*], and (OH) at 25°C of the new (dilute) solution? (show your work). pH : рон: [H30*) : [OH') : Experimental Data, Observations, and Calculations - Use correct sig figs and units for all measurements and calculations Part B: Standard pH What color do you see for each...
Strong-Strong Titrations Experiment 1: 45.0 mL of 0.125 M HBr is being titrated with 0.375 M NaOH. C. Point C: 15.0 mL of the titrant has been added. 1. How many moles of HBr are in your initial sample? 2. How many moles of H3O+are in the initial sample? 3. How many moles of NaOH have been added? 4. How many moles of OH-have been added? 5. How many moles of H2O have been formed from neutralization? (HINT:Is...
(2 points) A 50.0 mL solution of 0.040 M pyridine (C6HSN) was titrated with 0.0500 M HCl. Calculate the pH at the following volumes of added acid: Va-0, 15, Ve, 30.0, Ve, and 45.0 mL. Kb 1.7x109 2.
Q4 Solution Stoichiometry 10 Points A 25.0 ml of 0.527 M sodium sulfide(aq) and 55.0 ml of 0.243 Miron (III) nitrate are mixed together. What mass of solid iron (III) sulfide can be formed? What is the limiting reagent? Show your work for full credit. 3 Na2S (aq) + 2 Fe(NO3)3 (aq) ► Fe2S3 (s) + 6 NaNO3 (aq) The limiting reagent is Enter your answer here The theoretical yield of iron sulfide is Enter your answer here Please select...
please also calculate pH, pOH, and [H3O+] 11.5 g of KOH (s) is dissolved up to 250.0 mL in water. What is the molarity of this solution? Molarity of first solution: Enter your answer here M KOH If we then add an additional 2.750 L of water to the solution what is the new molarity? Molarity of second solution: Enter your answer hace M KOH For this second solution calculate the pH, POH and [H3O+]
Problem 4 (8 points). What is the pH of a 0.890 M NH (aq) solution at room temperature? The base ionization constant of ammonia is Ko = 1.78 10. Round off your answer to 2 decimal places and enter your answer in the box provided with correct units and sig. figs.: The pH of Answer: . He 0.890 M ammonia is): pH =