The four solutions were made and then mixed in the following order. 1. Starting with 0.100M Bacl2 100.0 mL 2. Adding 0.100M AgNo3 50.0 mL 3. Adding 0.100M H2SO4 50.0 mL 4. Added 0.100M NH3 250.0 mL Write a response formula for the response that takes place after each step, assume that all the responses are complete and calculate the concentration of Ba2+, Cl-, NH3 and NH4+ in the final solution.

Answer Questions #27 through #31 about the titration curves below (labeled a and b) for two different bases. The titrant acid used in both cases was 0.100 M HCl and the volume of the base solutions in both cases was 75.0 mL mL. 14 14 12 12 - 10- 10 8- 6. 4. 2- 2- 20 40 60 80 100 20 40 60 80 100 Volume of acid added (mL) (a) (b) Volume of acid added (mL) 2014 Pearson Education Inc P Type here to search 11:17 AM (? 3/18/2021 -> ort sc 80 6. ece num ER/TY || на 0 04 2C Hd

Please answer questions 3a&b based on the information in question 2.

8. A student conducts an acid-base titration to investigate the change in pH during a reaction between hydrochloric acid and ammonia solution. a. Name a piece of equipment that could be used to provide an accurate measurement of pH during the titration and explain how it would be calibrated. The student transfers 50cm3 of 1.0moldm3 ammonia solution acid into a beaker. During the titration the student adds 50cm3 1.00moldm³ hydrochloric acid from a burette into the beaker and records the pH throughout. b. Sketch the pH curve produced during this titration.

AMoving to åñðt Question 15 The molar solubility of Pbl2, determined experimentally, is 3.6 x 10³ mol/L. This means that in 1.0 L of a saturated Pbl2 solution, only 3.6 x 10³ mol of Pbl2 dissolves, forming. mol of Pb2* lon and mol of l' ion. O 3.6 x 103, 7.2 x 103 O 3.6 x 103, 3.6 x 103 O 3.6; 3.6 O 1.29 x 10-3, 1.29 x 103 Question 15 of 22 > A Moving to another question will save this response. MacBook Pro F10 F7 esc F3 #3 $4 3 4 6 7 9 1 Q W E T Y F G K C V B command

1. How do you prepare a 100mL of 0.1 M phosphate buffer?To make 100 mL of 0.1 M phosphate buffer: Calculate the amount of sodium phosphate needed. moles of sodium phosphate = (0.1 mol/L) x (0.1 L) = 0.01 moles mass of sodium phosphate = moles x molar mass = 0.01 moles x 142 g/mol = 1.42 g Dissolve 1.42 g of sodium phosphate in distilled water in a 100 mL volumetric flask. Adjust the pH of the solution to the desired value (usually around 7.4) using a strong acid or strong base. Bring the solution to the final volume (100 mL) with distilled water.   2. From the anterior buffer, how do you make 100mL of 0.05 M? To make 100 mL of 0.05 M phosphate buffer from the 0.1 M stock solution: Calculate the amount of the 0.1 M phosphate buffer needed. moles of phosphate buffer = (0.05 mol/L) x (0.1 L) = 0.005 moles Calculate the volume of the 0.1 M phosphate buffer needed. moles = concentration x volume (in liters) volume = moles / concentration = 0.005 moles / 0.1 mol/L = 0.05 L or 50 mL Measure…

5) Calculate the solubility of each of the following salts in moles per liter given their Ksp values. Ignore any acid-base properties.a. Ag3PO4, Ksp=1.8x10−18b. CaCO3, Ksp=8.7x10−9C) Calculate the solubility of the silver phosphate and the calcium carbonate in question 5 in grams/L.

Please answer all the three the questions as soon as possible Thank you so much! 3. Solid silver nitrite is slowly added to 125 mL of a sodium cyanide solution until the concentration of silver ion is 0.0523 M. The maximum amount of cyanide remaining in solution is  M.

*76. Using data from Table 16.3, calculate the concentrations of Hg²*(aq), HgCl*(aq), and HgCl2(aq) that result when 1.00 L of a 0.100 M Hg(NO3)2 solution is mixed with an equal volume of a 0.100 M HgCl, solution. (Hint: Use the analogy with amphoteric equilibria discussed in Sec- tion 10.8.)

MISSED THIS? Read Section 18.4 (Pages 803-817); Watch KCV 18.48 Consider the curve shown here for the titration of a weak monoprotic acid with a strong base. 14 12- 10- 8 6 4 2- 0 0 10 20 30 40 Volume of base added (mL) ▶ Part A ▸ Part B Part C At what volume of added base is the pH calculated by working an equilibrium problem based on the initial concentration and K₁ of the weak acid? Express your answer in milliliters as an integer. V= ΠΗΓΙΑΣΦ VAX by Submit Previous Answers Request Answer X Incorrect; Try Again ? mL