Determine the [H_3 O^+] in an aqueous solution of hypothetical diprotic acid, H_2 X, that is...
For the diprotic weak acid H_2 A, K_a1 = 3.4 times 10^-6 and, K_a2 = 5.7 times 10^-9. What is the pH of a 0.0800 M solution H_2 A? What are the equilibrium concentrations of H_2 A and A^2- in this solution? pH = [H_2 A] = [A^2-] =
Alanine (HA) is a diprotic amino acid with K_a1 = 4.53 times 10^-3 and K_a2 = 1.36 times 10^-10. Determine the pH of the following solutions. A) 0.260 M alanine hydrochloride (H_2 A^+ Cl^-) pH = B) 0.260 M alanine (HA) pH = C) 0.260 M sodium alaninate(Na^+ A^-) pH =
What is the pH of the solution if o.017 mol of HCl is added to a buffer containing 0.015 mol of RCOOH and 0.039 mol of RCOONa (source of RCoo)? Ka = 2.1E-5 Check Oxalic acid HOOCCOOH, is a diprotic acid with K_a1 = 0.056 and K_a2 = 1.5 times 10^-4. Determine the equilibrium [HOOCCOOH] in a solution with an initial concentration of 0.15 M oxalic acid. HOOCCOOH(aq) = HOOCCOO (aq) + H^+ (aq) HOOCCOO (aq) = OOCCOO (aq) +...
thank u What is the [CO_3^-2] in seawater (a 0.05 M solution of carbonic acid, K_a1 = 4.3 times 10^-7, K_a2 = 5.6 times 10^-11)?
A solution is prepared by adding 0.10 mol of lithium nitrate, LiNO_3 to 1.00 L of water. Which statement about the solution is correct? A)The solution is basic. B) The solution is C) The solution is weakly acidic. D) The solution is strongly acidic. E The values for K_a and K_b for the species in solution must be known before a prediction can be made. The pH of blood is 7.35. It is maintained in part by the buffer system...
One of the buffers to maintain the pH of blood is the carbonic acid, H_2CO_3, buffer. Carbonic acid is diprotic and it's equilibrium constants are K_a1 = 4.2 times 10^-7 and K_a2= 4.8 times 10^-11. How would you prepare 5.0 L a carbonic acid buffer of a pH of 7.2 from 0.250 M H_2CO_3? You have available NaHCO_3 (MW = 84.0) and Na_2CO_3 (MW = 106).
VETU.. 3. Consider a hypothetical diprotic acid (H2A) with Kai-4.0 * a 0.080M solution of NaHA? diprotic acid (H2A) with key = 4.0 x 10' and Ka2 = 2.5 x 10-7. What is the pH of 4. Consider the titration of 40 o minte som 4. Consider the titration of 40 ml of v etus ith OZOM NAOH. Anhusteadu-Cev10.5 with OM NaOH. 5. What is the pH of 150.mL of a buffer that is a. 0.20M HCIO and 0.10M NaClo?...
What is the [H_3 O^+] and the pH of a benzoic acid-benzoate buffer that consists of 0.13 M C_6 H_5 COOH and 0.45 M C_6 H_5 COONa? (K_a of benzoic acid = 6.3 times 10^-5) Be sure to report your answer to the correct number of significant figures. [H_3 O^+] = times 10^ M pH =
A solution contains 6.30 times 10^-2 g of oxalic acid, H_2 C_2 O_4. 2 H_2 O, in 250 mL. What is the molarity of this solution? 6.30 times 10^-2 g H_2 C_2 O_H. 2 H_2 O times 1 mol/126.06582 =
is this correct ? 5.(5 points) A 0.10-mal sample of a diprotic acid, H2A, is dissolved in 250 mL of water. Kaq for this acid is 1.0 10-5 and Kaz is 1.0 10-10. Calculate the concentration of A2- in this solution 1.0 x 10-12 M 1.0 x 10-10M 1.0 x 10-7M 1.0 x 10-3M