Show All Your Work NEATLY!! With EXPLAINATIONS! CARE MORE ABOUT YOUR WORK THAN THE ANSWERS! Answers...
please show all work and write neatly. when solving the 50ml and 100ml please explain how to find the ph. 5. Consider the titration of 100.0 mL of 0.100 M H2NNH>/hydrazine (Ky = 3.0 x 10-6) by 0.200 M HNO3. Assume that hydrazine is monoprotic. Determine the following: a. pH before any HNO3 is added b. volume of base to reach the equivalence point c. pH when 20.0 mL of HNO, has been added d. pH when 25.0 mL of...
Please answer #2 php/ 20 %20Extra%20Credit%20-%20Spring%2020 18.pdf CHEM 108- Extra Credit-Spring 2018 IMPORTANT: Show ALL your work. Don't forget the significant figures and units!! Would the following mixtures result in buffer solutions? (Justify your answers) 1. a 100.0 ml, of 0.10 M NH, 100.0 mL of0.15 M NHaCl b. 50.0 mL of 0.10 M HCIO4, 35.0 mL if 0.15 M NaCIO c. 125.0 ml, of 0.15 CH?NH2. 120.0 mL of 0.25 M CHNE ICI d. 165.0 mL of 0.10 M...
please answer 23 and 24 *please show all work and calculations * given temperature foart em to reach equilibrium e con 15) Pure Solic and pure liquide are excluded from equilibrium constant pre Cheric £69 kg 19) If a reaction is endothermic, the reaction temperature results in an ineren 20) A solution of ammonia is 2.0% ionized at 25.0 °C. What was the original concentration in M) of the ammonia solution? The Kb at 25.0 °C for ammonia is 1.8...
EXERCISE 13 INSTRUCTOR Solution Concentrations Show calculation setups and answers for all problems. 1. What will be the percent composition by mass of a solution made by dissolving 15.0 g of barium nitrate, Ba(NO), in 45.0 g of water? Ba(NO3)2 HO 2. How many moles of potassium hydroxide, KOH, are required to prepare 2.00 L of 0.250 M solution? 3. What is the molarity of a solution that contains 3.50 g of sodium hydroxide, NaOH in 150. mL of solution?...
Write legibly. Show your work for full credit. All calculations should be performed for an aqueous solution at a temperature of 25 °C. 1. Calculate the pH after the addition of 0.00, 10.00, 25.00, 40.00, 45.00 ,50.00, 51.00, 55.00, 60.00, and 70.00 mL of 0.1000 M of HCl in the titration of 50.00 mL of 0.1000 M NaOH.. 2. Make a graph of pH versus the volume of HCl added. (Use Excel Spread Sheet)
PLEASE SHOW WORK! Answers are included. What is the molarity of a 20% by weight solution of NaOH? MW=39.99 A: 5M What percentage (%) is 1.5M NaOH? A: 6% How would you prepare 250 mL of a 0.5M NaCl solution? MW=58.44 A: 7.31g NaCl and H2O until reach 250 mL If you add 10g of NaCl to 500 mL, what is the concentration, in percent, of the solution? A: 2% NaCl solution If you add 10g of NaCl to make...
pls show all work. 11,13,14 all all part of the same titration problem! I attempted it several times and am getting very confused WA *** A 50 mL solution of 0.10 M benzoic acid (HC7H502 (aq)) (Ka = 6.5 * 10-5) is titrated with 0.20 M NaOH (aq). With this information, answer the questions (11-14) below.*** SB 11. What is the pH after the addition of 5.0 mL of NaOH (aq)? A) 5.49 B 3.58 C) 4.19 D) 2.59 E)...
all please. its okah if its just the answers ozmol 53. A 100.0 mL sample of 0.20 M HF is titrated with 0.10 M KOH. Determine the pH of the solution after the addition of 400.0 mL of KOH. The Ka of HF is 3.5 x 10-4. a.)12.30 b. 12.60 с. 12.78 d. 13.85 HI & KOH + H₂O .04 54. Which response has both answers correct? Will a precipitate form when 250 mL of 0.33 M Na CO. are...
please show all work and write your answers neatly and thoroughly please thank you. please make sure your answer is correct! Find the solution of the following initial value problem using the integrating factor methos.. de 1 + V +21+2 and y(0) = 3
Calculations The following calculations are necessary to complete your Report Sheet. Consult the table on page 119 for appropriate K and K, values. Complete these calculations on your Report Sheet for complete credit. I. pH of Strong and Weak Acids 1. Calculate the pH of a 0.10 M hydrochloric acid solution, HCl(aq). 2. Calculate the pH of a solution prepared by diluting 5.00 mL of 0.10 M hydrochloric acid, HCl (aq), in enough water to make a 50.0 mL solution....