what ?s mecaniss Br n-Buli PHCN Ph. Et20, -78 °C then aq. HCI 61%

98 grams of sodium acetate (Mol. wt =82 g/mol) were placed in 764 mL of water such that the final volume was 784 mL. What is the pH of the solution?

8:43 1 ll 5GE Question 11 of 25 Submit The pH for 0.0715 M solution of CCl,CO2H is 1.40. Determine the value of Ka for CCl,CO2H. 1 2 Based on the given values, fill in the ICE table to determine concentrations of all reactants and products. CCI,CO,H(+ H20(1) =H;0*(aq) +CCl,CO2 (ac Initial (M) Change (M) Equilibrium (M) 5 RESET 0.0715 1.40 -1.40 0.040 -0.040 0.032 -0.032 +x -X 0.0715 + x 0.0715 - 1.40 + x 1.40 - x 0.040 + x 0.0340 - x 0.032 + x 0.032 - x

What mass of HNO, is present in 245.0 mlL of a nitric acid solution having a pH of 490? Mass 3D Jmg

How many moles of conjugate base should be added to 315 mL of 0.45 M HLac to give a pH of 4.00?

Both items

3. A solution with a pH of 2.91 is prepared by dissolving 1 g. of benzoic acid, HC,H,O,, a weak acid, in 350 mL of water. What is K, of benzoic acid?

K3. What would HWK4. Calculate how many mL of 2.45M KOH or 1.18M HCI must be added to 100mL of 3.85g of piperidine hydrochloride to adjust the pH to 11.7 HWK5. (a) Write the Kb reaction for the conjugate base A

10. help please use sig figs

Don