A 21.5 mL sample of 0.367 M dimethylamine, (CH3)2NH, is titrated with 0.269 M hydroiodic acid. (1) Before the addition of any hydroiodic acid, the pH is (2) After adding 12.5 mL of hydroiodic acid, the pH is (3) At the titration midpoint, the pH is (4) At the equivalence point, the pH is (5) After adding 46.1 mL of...
Calculate the pH of each of the following buffered solutions. K. (HC2H2O2) = 1.8 x 10-5 1.0.19 M acetic acid/0.23 M sodium acetate pH 2.0.23 M acetic acid/0.19 M sodium acetate PH 3. 0.070 M acetic acid/0.18 M sodium acetate PH 4.0.18 M acetic acid/0.070 M sodium acetate PH
Each of the following mixtures is placed in a dialyzing bag and immersed in distilled water. Which substances will be found outside the bag in the distilled water? starch solution (colloid) and alanine, an amino acid, solution starch solution (colloid) and alanine, an amino acid, solution starch alanine starch and alanine none of the above NaCl solution and starch solution...
1.) For each of the titrations you performed, prepare a separate graph that shows the relationship between the pH of the buffer and the volume of strong acid added to the solution. Make sure you indicate the identity of your weak acid (which is formic acid) and of the buffer you are titrating (Buffer 1, 2, or 3) at the...
Determine the normality of the solutions described below. a. 86 mg K2SO4 dissolved in 400mls of water (ion charge) b. 36.5 mg HCl in 100 mls of water for the reaction (acid/base reaction) c. 55 mg SO4 per liter of water for the reaction (acid/base reaction) d. 55 mg SO42 per liter of water for the reaction (acid/base reaction) e....
Homework 5-Feb 28.docx Please prepare your homework answers either in WORD file or on an engineering paper by handwriting. If you use a handwriting form, please scan the paper neatly and upload a PDF or word version to Canvas and HAND in your original hard copy to me before the class if possible. NOTE: This homework contains a submission of...
If you use 12.22 g of salicylic acid and an excess of acetic anhydride in the synthesis of aspirin, what would be the theoretical yield of acetylsalicylic acid in moles? In grams? Determine the percent yield if 10.50g of aspirin is isolated
Let m > 0 be a constant. Suppose a tank starts with 10kg of salt water with 1% salt by mass. Suppose further that every hour, m kg of salt water with a concentration of 10% salt is added, and 2kg of the water in the tank is drained. The solution is kept well mixed at all times. (a) (2...
5. You need to make 500.0 mL of a buffer with a pH of 2.20. You have the following substances to work with: 0.100 M NH3 Solid NaN3 Solid NaClO2 0.100 M HClO2 Solid NH4Cl Solid Na2SO3 0.100 M HN3 Solid NaHSO3 Ka for HClO2 = 1.1x10-2 Kb for NH3 = 1.8x10-5 Ka for HN3 = 1.9x10-5 Ka1 for H2SO3...
Carl's Golden Hot Pancake Restaurant features sourdough pancakes made from a Requirements strain of sourdough dating back to the Yukon gold rush. To plan for the future, Carl 1. Use the high-low method to determine Carl's operating cost equation. needs to figure out his cost behaviour patterns. He has the following information 2. Use your answer from Requirement 1 to...