WebbQuestion 2. Which one of the following is equal to the p Ka of a weak acid? a) Its relative molecular mass. b) The pKb of its conjugate base. c) The pH of a solution containing equal amounts of the acid and its conjugate base. d) The equilibrium concentration of its conjugate base. Webb4 apr. 2024 · The pH of aqueous solution of ammonium formate is (pKa of HCOOH= 3.8 and pKb of NH3 =4.8) asked Jan 6, 2024 in Equilibrium by Sahida (80.4k points) equilibrium; aiims; neet; 0 votes. 1 answer. When 50 mL of 0.1 M NH3 is mixed with 10 mL of 0.1 M HCI then what is the pH of resultant solution?
The pKa of butyric acid "HBut" is 4.7. How do you calculate
Webb29 apr. 2015 · $\begingroup$ pkb = 10.94 ? At pH = 7.39, this would imply that the concentration of the base is much higher than the concentration of the corresponding … Webb3 feb. 2024 · The value of K a is used to calculate the pH of weak acids. The pK a value is used to choose a buffer when needed. Choosing an acid or base where pK a is close to the pH needed gives the best results. Relating pH, Ka, and pKa pH, Ka, and pKa are all related to each other. For an acid HA: K a = [H + ] [A -] / [HA] pK a = - log K a howdens factory runcorn
Relationship between Ka and Kb (video) Khan Academy
WebbDPP(1 TO ) 13th PHY - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Find the equivalent weight of reactant (i) KHC2O4·H2C2O4 (acid) (ii) (iii) K4[Fe(CN)6] (iv) Al2(SO4)3 (v) H3PO4 (vi) Zn2+ + K4[Fe(CN)6] Zn3K2[Fe(CN)6]2 (vii) Cr2O72– Cr3+ + 7H2O (viii) MnO4– MnO2 (ix) MnO4– MnO42– (x) H2S + SO2 S + H2O (xi) FeC2O4 Fe3+ … Webb6 mars 2024 · If pkb for cn- at 25 c is 4.7 the ph of 0.5m nacn solution is See answers Advertisement kobenhavn Answer: pH = 11.5 Explanation: of = 4.7 cM 0 0 So … Webb8.CN−, N2H4, (C2H5)3N, BrO− 9.N2H4, CN −, BrO−, (C 2H5)3N Explanation: The stronger the base, the larger its K b value and the smaller its pK b value from pK b = −logK b. To find the pK b for the conjugate base of a weak acid, use pKa+pK b = 14. Thus we have N2H4 (pK b = 5.77) (weakest) BrO− (pK b = 14.0− 8.69 = 5.31) CN− (pK b ... howdens fareham