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- Calculate the Kb value for the conjugate base of hydrosulfuric acid. The Ka for H2S is 9.6 x 10-8if the pH at one half the first and second equivalence points of a dibasic acid is 4.80 and 7.34, respectively, what are the values for pKa1 and pKa2?The Kg of "HA" is 4 x 10-10. Calculate the pK. (keep one decimal place). A 0.10 M solution of a weak acid, "HA*, has [Hy0+] = 0.0000072 M. Determine [A] in the solution. (Hint: Where do Hy0* and A° come from?)
- Calculate the pH at 25°C of a 0.59M solution of potassium cyanide KCN . Note that hydrocyanic acid HCN is a weak acid with a pKa of 9.21. Round your answer to 1 decimal place.What are the conjugate acids for each of the following? CO32- Answer 1 NO3- Answer 2A weak base has Kb = 3.3x10-6. Calculate the pKa of the conjugate acid. Express your answer to two decimal places. pKa =
- Give typed explanation A 0.10 M solution of an acid, HA, has a pH of 3.0. What is the Kb of the conjugate base, A-, of this acid? For Kb, I got 9.1 x 10 ^-12. I want me make sure my answer is correct. Pleacse show steps and write clearly. Thank you!If acetic acid has a Ka of 1.8 x 10-5, what would be pH corresponding to the half-equivalence point in the pH curve of acetic acid? Please round your answer to 3 sig figs. pH has no unit.The pKa values of some hypothetical acids (HX, HY, HZ, HG) are shown below: HX pka=2.50, HY pKa=4.72, HZ pKa=1.87, HG pKa=5.67 Which of the following conjugate bases will be the weakest? a) X- b)Y- c)Z- d)G- e)they all have the same strength P.S could you please tell me which concept it is or a topic?