1 Titration Lewis Question 5 Of 10 1 Point Question Attempt 2 Of Unlimited 2 Ph 3 4 5 S 6 7 4 A Solution 1 (86.39 KiB) Viewed 24 times
✓ 1 Titration & Lewis Question 5 of 10 (1 point) | Question Attempt: 2 of Unlimited 2 pH = 3 4 × 5 Ś 6 ? 7 4 A solution is prepared at 25 °C that is initially 0.30M in trimethylamine ((CH3)N), a weak base with K₁= = 7.4 × 10 0.020M in trimethylammonium chloride ((CH3)NHCI). Calculate the pH of the solution. Round your answer to 2 deci places. 8 9 ✓ 10
✓ 1 Titration & Lewis Question 6 of 10 (1 point) | Question Attempt: 1 of Unlimited 2 0 ✓ 3 5 0 7 x10 8 9 A chemistry graduate student is given 300. mL of a 1.00M dimethylamine ((CH3)₂NH) solution. Dimethylamine is a w base with K₁=5.4 x 10-4. What mass of (CH³)NH₂Br should the student dissolve in the (CH3), NH solution to turn into a buffer with pH = 11.20? ✓ 10 You may assume that the volume of the solution doesn't change when the (CH3)₂NH₂Br is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits. (-
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