Calculate pKa values from the following Ka’s and vice versa: a. Nitromethane, Ka = 5.0 x 10^-11 b. Acetone, pKa = 19.3 c. Acrylic acid, Ka = 5.6 x 10^-5 d. Formic acid, pKa = 3.75

The dyes used were Bromocresol Green, Bromocresol Purple, Bromophenol Blue, Bromothymol Blue, and Methyl Orange

Given the reaction of 2 Ti (s) + 4 Cl2 (g) → 2 TiCl, (1) ΔΗ- 1608.4 J what would the AH for Ti (s) + 2 Cl, (g) TiCl, (1) S. -3216.8 J 804.2 J -804.2 J O-1608.4 J 5:18 PM

What is the concentration of Cd2+ in a solution that is 0.10 M Cd(NH3)42+? (Kf = 4.0 x 106) Group of answer choices  1.0 x 10-2  2.0 x 10-3  1.0 x 10-3  1.0 x 10-4 2.0 x 10-2

Determine the pKa using Henderson-Hasslebach equation. pH = 2.9 For serial dilution method: HCI H30 CI .1 -X +x +x .1-x X Ka = x/ 0.1 - x X = 1029 X= 0.00126 Hben = .1 - .00126 Hben = 0.99874 Ka = 0.00126 / 0.1 - 0.00126 Ka = 0.0000161

Use the following data to calculate the Ksp value for each solid. -3 a. The solubility of MgC2O4 is 9.3 × 10-³ mol/L. b. The solubility of Au(OH)3 is 2.12 × 10-¹² mol/L. K sp K sp - =

Answer number 2 only

An enzyme reaction produces 1.2 x 10-4 M hydrogen ions during the 1.0 min duration of the reaction. The enzyme reaction mixture is buffered by a 0.10 M Tricine (pKa 8.16), pH 8.3.  What is the new pH after the reaction is over?  *hint* the Henderson-Hasselbalch equation is used twice*

A student measures k for a certain blue dye to be 600.4 M-¹ at 560 nm. What is the molarity of the dye in a solution with an absorbance of 0.204 at this wavelength? Ens nousior #inslo: Monia sin 8 foi 00.01 Par det id elsem. sow & netimuloa 51 (5) sonos silf et trawIm 00 001 et gauzulib im

C. What is the pH if 30.0 mL of 0.20M NaH2PO4 was mixed with 35.0 mL of 0.30M NazHPO4? The pKa values of phosphate are 2.14, 7.20 and 12.40. D. What is the pH if 28.0 mL of 0.570M phosphoric acid is added to 110.0 mL of 0.4800M monosodium dihydrogen phosphate? The pKa values of phosphate are 2.14, 7.20 and 12.40.