The leaves of the rhubarb plant contain high concentrations of diprotic oxalic acid (HOOCCOOH) and must...
The leaves of the rhubarb plant contain high concentrations of diprotic oxalic acid (HOOCCOOH) and must be removed before the stems are used to make rhubarb pie. If pKa1 1.23 and pKa2 4.19, what is the pH of a 0.0206 Msolution of oxalic acid?
Chapter 15 The leaves of the rhubarb plant contain high concentrations of diprotic oxalic acid (HOOCCOOH) and must be removed before the stems are used to make rhubarb pie. If pKa1 = 1.23 and pKa2 = 4.19, what is the pH of a 0.0199 M solution of oxalic acid?
W See Periodic Table D See Hint The leaves of the rhubarb plant contain high concentrations of diprotic oxalic acid (HOOCCOOH) and must be removed before the stems are used to make rhubarb pie. If pka1 = 1.23 and pka2 = 4.19, what is the pH of a 0.0228 M solution of oxalic acid?
1st attempt Feedback ♡ See Hint The leaves of the rhubarb plant contain high concentrations of diprotic oxalic acid (HOOCCOOH) and must be removed before the stems are used to make rhubarb pie. If pKa1 = 1.23 and pKa2 = 4.19, what is the pH of a 0.0255 M solution of oxalic acid? * 1.66
Feedback w See Periodic Table See Hint The leaves of the rhubarb plant contain high concentrations of diprotic oxalic acid (HOOCCOOH) and must be removed before the stems are used to make rhubarb pie. If pk.1 - 1.23 and pk. - 4.19, what is the pH of a 0.0250 M solution of oxalic acid? 102
Answer is NOT 1.8 x 10^-4 See Periodic Table D See Hint The leaves of the rhubarb plant contain high concentrations of diprotic oxalic acid (HOOCCOOH) and must be removed before the stems are used to make rhubarb pie. If pka1 = 1.23 and pka2 = 4.19, what is the pH of a 0.0228 M solution of oxalic acid? 13.99
Calculate the molar concentrations of oxalic acid (COOH)2, HOOCCO2-, (CO2)22-, H3O+, and OH- in 0.15 M (COOH)2 (aq). This is a special case of general diprotic acid dissociation. First, we need to find the pKa1 and pKa2 in the water at room temperature, which is available online e.g. Wikipedia (oxalic acid). pKa1 = 1.23, pKa2 = 4.19. Either solve numerically or analytically. Report here [H3O+] = ______ M. 2 sig. figures.
Oxalic acid (H2C2O4) is a diprotic acid found in Rhubarb leaves. Write out the ionization reactions for oxalic acid when it reacts with water. Give the states involved. step 1: step 2:
6. Oxalic acid H2C2O4 is a diprotic acid and can be used, in dilute form, as wood bleach. pKa1 = 1.237 and pKa2=4.187 A. How many milliliters of 0.0500 M NaOH would be required to completely neutralize 10.0 mL of 0.100 M H2C2O4? (5 pts) B. Estimate the pH at the first equivalence point of the titration. (6 pts) C. What is the pH at the second equivalence point of the titration. (8 pts) Please help with work shown, especially...
Unknown acid 2 6. Complete the following table. Trial 1 Trial 2 Trial 3 Mass of unknown (8) 0.175 0.120 0.122 Initial buret reading (mL) 0.00 22.37 0.00 Final buret reading (mL) 22.37 44.85 22.83 Volume of NaOH added (mL) 22.37 22.48 22.83 We will assume that the data collected for the first trial is not accurate. 7. What is the average mass of unknown acid for Trials 2 and 3? (Must show calculations) 8. What is the average volume...