Calculate the pH of the following solution (Ka HCO2H is 1.8x10-4 and Kb NH3 is 1.8x10-5): 0.10 M HCO2H / 0.10M NaHCO2 buffer
NA = 6.0221367E23 Ka(CH3COOH) = 1.8x10E5 Kb(NH3) = 1.8x10E5 Ka(HCN) = 4.9x10E1 What is the pH of a 0.10 M CH3COOH(aq) solution?
Determine Ka for a 0.10M acetic acid (CH3CO2H) solution that has a pH of 2.87.
Please type all answers and show all work. You titrate 25.0mL of 0.10M NH3 with 0.10M HCl. (Kb=0.000018) a.) What is the pH of the NH3 solution before the titration begins? b.)what is the pH at the equivalence point? c.)calculate the pH of the solution after adding 5.00,15.00,20.00,22.00, and 30.00mL of the acid d.)using this info, plot the titration curve (pH vs titrant volume) 30.00.
Determine the pH of a 0.188 M NH3 solution at 25°C. The Kb of NH3 is 1.76x10-5.
onsider the reaction of NH3 with water: NH3 + H2O ↔ NH4+ + OH- (Kb=Kw/Ka) and also NH4+ + H2O ↔ NH3 + H3O+ (Ka = 5.70×10-10) be sure to show all work including the ICE Tables. a) Find the pH of 50.00 mL of 0.200M NH3 after the addition of 45.00 mL of 0.200M HCl. b) Find the pH of 50.00 mL of 0.200M NH3 after the addition of 50.00 mL of 0.200M HCl. c) Find the pH of...
Determine Ka of the weak acid HX knowing that 0.10M solution of LiX has pH of 8.90 Post-Laboratory Questions and Exercises DUE AFTER COMPLETING LAB. ANSWER IN SPACE PROVIDED. 1. Determine the K, of the weak acid HX knowing that a 0.10 M solution of LiX has pH of 8.90.
Equations pH=-log[H3O+]; pOH= -log[OH]; pKw=14.00=pH+POH; Ka-[H3O+][A-[HA]; Kb=[BH+][OH-)[B); pKa=-log Ka; Ka. Kb=Kw Constants Ka (HS-)=1x10-19; Ka (HF) 7.2x10-4; Ka ([Al(H20).]+)7.9x10-6; Ka (H3PO4)=7.5x10-2: Ka (HPO42-) =3.6x10-13; Ka (HCI)=Huge; Ka(Na+)=tiny; Ka(Cl-)tiny; Kb(NH3)=1.8x10-5; Kw=1x10-14 1) Calculate the pH of aqueous 0.25M HCl and 0.25M HF solutions. 2) Complete the following tables for aqueous solutions of conjugate acid-base pKa pKb Kb 1.3x10-4 35 3) Complete the following table for aqueous solutions DHL TH+) OH) pOH 1x102 4) Calculate the pH of aqueous 0.15M Ba(OH)2 and...
NA = 6.0221367E23 Ka(CH3COOH) = 1.8x10E5 Kb(NH3) = 1.8x10E5 Ka(HCN) = 4.9x10E10 What is the Kb for the weak base CN-?
If 0.10M solution of a weak base has a pH of 8.90, find the Kb for the base.