Find the p H of a 0.573 M N a A solution. The salt completely dissociates into N aplusand Aminus. N a is the cation of a strong base so it will not affect the p H of the solution. Aminus is the anion of the weak acid H A. The K a of H A is 1.2E-5.

Consider two acids: Cl,CHCO,H (dichloroacetic acid, pK, = 1.3) and HCO,H (formic acid, pK,- 3.8). %3D a Which acid is the stronger acid? Select the single best answer. dichloroacetic acid formic acid

Ethanoic acid, CH3COOH, is a weak acid and dissociates into H3O+ and CH3COO− ions. Which of the following will have the highest concentration in a 0.1 M ethanoic acid solution? Select the correct answer below: OH− H3O+ CH3COO− CH3COOH

Identify the weaker base and the correct relative value of the equilibrium constant, K, for this reaction. OH O I Il is the weaker base; K 1 Ill is the weaker base; K 1 + II III OH IV

Phosphoric acid, H3PO4, is a triprotic acid, for which Ka1 = 7.2 × 10-3, Ka2 = 6.3 × 10-8 and Ka3 = 4.2 × 10-13. What is the value of Kb for H2PO4- ?

Acids What Is ne PH O d) Titration of a weak diprotic acid. 1- H2SO4 is a strong acid in its first ionization; but a weak acid in its second ionization with Ka = 0.012. Calculate the pH of a 0.056 M solution of H2SO4. 0.012 0.0819 0.056 O 1.086 2- Calculate the hydronium ion concentration and the pH of a 10-2 M NaH2A solution. Given: The dissociation constants of H2A are Ka1 = 10-2 and Ka2 = 10-7 %3D %3D

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Which of the following does NOT describe an acidic solution? OThe [HO-J is 4.1 x 10-5 OThe [H3O+] is 1.0 x 105 OThe [H3O+] is greater than the [OH-] The [OH-1 is 9.5 x 10 10 Type here to search U ck A S D J. 个shift alt alt ctri

A 0.200 M solution of diethylamine, a substance used in insecticides and fungicides, is only 3.9% ionized at 25°C. Calculate the pKb of diethylamine and the pKa of its conjugate acid, the diethylammonium ion. Round to two decimal places.   pKb = ? pKa = ?

A weak acid, HA, has a Ka=9.8 × 10–5. Find the % dissociation of a 10‒2.00 M of this solution.