The pH of a 0.62M solution of hypobromous acid (HBrO) is measured to be 4.42. Calculate the acid dissociation constant K of hypobromous acid. Round your answer to 2 significant digits. a K.-O a x10 X

A chemist dissolves 163. mg of pure nitric acid in enough water to make up 360. mL of solution. Calculate the pH of the solution. Round your answer to 3 significant decimal places. 0 x10 X 5

The pH of a 0.49M solution of acrylic acid (HC₂H₂CO₂) is measured to be 2.28. Calculate the acid dissociation constant K of acrylic acid. Round your answer to 2 significant digits. a K₁ = 0 x10 X Ś

Complete the table below, Be sure each of your answer entries has the correct number of significant digits. You may assume the temperature is 25 °C. formula H.CO, HBrO conjugate acid CHINHY K₂ 45 × 10 ** 23 x 10 23 x 10 formula HCO conjugate base K Bro CHÍNH, A 2.2 × 10 43 × 10 44 × 10 % 0° 0.9 X

Calculate the pH of a 0.060 M C₂H5N (pyridine) solution. The K, for pyridine is 1.7 x 10. Be sure your answer has the correct number of significant digits. pH = 0 x10 X

The pH of a 1.2M solution of hexanoic acid (HC H,,0,) is measured to be 2.39. Calculate the acid dissociation constant K, of hexanoic acid. Be sure your answer has the correct number of significant digits. K a x10

O ACIDS AND BASES Calculating the pH of a weak base solution 0/3 The base protonation constant ₂ of trimethylamine ((CH³)²N) ¡S 6.31×10¯³. Calculate the pH of a 0.27 M solution of trimethylamine at 25 °C. Round your answer to 1 decimal place. pH = 0 X

Fill in the missing chemical formulae in the tables below. acid conjugate base base conjugate acid H₂O H₂O HCl H₂O + ☐ ☐ So 2- 4 ப OH ☐

The chemical formulae of some acids are listed in the first column of the table below, and in the second column it says whether each acid is strong or weak. Complete the table. List the chemical formula of each species present at concentrations greater than about 10-6 mol/L when about a tenth of a mole of the acid is dissolved in a liter of water. strong or weak? species present at 106 mol/L or greater when dissolved in water acid HBr strong HC10, weak HBro, strong HF weak The chemIcarTomuae or sor Complete the table. List the e is dissolved in a liter of water

Complete the table below. Round each of your entries to 2 significant digits. You may assume the temperature is 25 °C. conjugate acid conjugate base x10 formula K, formula K, CH,NH, 4 4.4 x 10 HCH,CO, - 5 1.8 x 10 H BrO -9 2.3 x 10