A solution is prepared at 25 °C that is initially 0.14M in propanoic acid (HC,H,CO,), a weak acid with K,= 1.3 x 10 , (KC,H,CO,). Calculate the pH of the solution. Round your answer to 2 decimal places. -5 and 0.012Min potassium propanoate pH %3D

At 22 ˚C, an excess amount of a generic metal hydroxide, M(OH)₂, is mixed with pure water. The resulting equilibrium solution has a pH of 10.20. What is the Ksp of the salt at 22 °C? K sp= APR 9 $ 4 % mtv G Search or type URL 5 MacBook Pro < 6 ONT17 X & 7 = 11 * 00 66 8 + A ( 9 < *** m - ) O W P { + 17 [ = } 1 delete

A chemist titrates 230.0 mL of a 0.3332 M lidocaine (C, H,, NONH) solution with 0.1217 M HBr solution at 25 °C. Calculate the pH at equivalence. 14 21 The p K, of lidocaine is 7.94. b. Round your answer to 2 decimal places. Note for advanced students: you may assume the total volume of the solution equals the initial volume plus the volume of HBr solution added. pH = |

We want to prepare a buffered solution having a pH of 4.97 using concentrated (23.6 M) formic acid (HCOOH) and solid sodium formate (HCOONA). Ką for formic acid is 1.8 x 10-4. Incorrect. Calculate the ratio [HCOO (aq)] / [HCOOH(aq)] in the buffered solution required to achieve a pH of 4.97. [HCOO (aq)] /[HCOOH(aq)] = i 1.68E1 eTextbook and Media Hint Save for Later Attempts: 2 of 3 used Submit Answer