Which one of the following equations describes the relationship between Ka for the ammonium ion (NH4+) and Kb for ammonia (NH3)?
Which one of the following equations describes the relationship between Ka for the ammonium ion (NH4+)...
Ka of (NH4)+ : 5.70x10^-10
Ka of Piperidinium ion: 7.50x10^-12
Ka of ethyl ammonium ion: 3.18x10^-10
Ka of anilinium ion: 2.51x10^-5
What is the pH of a solution that is (This problem requires values in your textbook's specific appendices, which you can access through the OWLv2 MindTap Reader. You should not use the OWLv2 References' Tables to answer this question as the values will not match.) a prepared by dissolving 4.30 g of (NH4),S04 in water, adding 100.0 mL of...
Ka for NH4^+ ion is 5.6x10^-10 at 25 oC. Which of the following combinations of reagents will produce a buffer with pH=8.85 ? a) 1 mol NH4Cl and .4 mol NH3 b) 1.4 mol NH4Cl and .4 mol NaOH c) 1 mol HCl and 1.4 mol NH3 d) all of these e) none of these
Nitrogen in a wastewater treatment plant is in the form of ammonia and ammonium ion and has a total ammonia concentration of 7.1 x 10^-4 M at pH = 7. Total ammonia concentration = [NH3] + [NH4^+]. NH3 partial pressure = 5 x 10^-10 atm. KH at 25-degree Celcius is 57 mol/(L x atm). Ka at 25-degree Celcius = 10^-9.26. A. Calculate NH3 and [NH4+] in M at the present condition where pH = 7 at 25 degrees Celcius. B....
Aqueous solutions of ammonia (NH3) and hydrogen cyanide (HCN) react to produce ammonium cyanide, (NH4CN) according to the following equilibrium reaction. NH3(aq) + HCN(aq) = NH4+ (aq) + CN (aq) Given the following equilibrium constants, which statement best describes the reaction once equilibrium is established? (Kw - 1.01 x 10-14) NH4+ Ka = 5.6 x 10-10 HCN ka = 4.0 x 10-10 reaction is product favored, K<1 reaction is neither reactant nor product favored reaction is product favored, K>1 reaction...
Aqueous solutions of ammonia (NH3) and hydrogen cyanide (HCN) react to produce ammonium cyanide, (NH4CN) according to the following equilibrium reaction. NH3(aq) + HCN(aq) = NH4+ (aq) + CN (aq) Given the following equilibrium constants, which statement best describes the reaction once equilibrium is established? (Kw = 1.01 x 10-14) NH4* Ka = 5.6 x 10-10 HCN Ka = 4.0 x 10-10 reaction is reactant favors, K> 1 O reaction is reactant favors, K <1 O reaction is product favored,...
a. Which one of the nitrogen waste products (ammonia/NH3 or
ammonium/ NH4+) will be most likely to enter the portal blood from
the colonic lumes? Please explain your answer.
For aq. solutions of salt NH4NO2, following reactions possible: NH4+ + NO2- -> NH3 + HNO2 k1? NH4+ + H2O -> H3O+ + NH3. ka = 5.6 x 10^-10 NO2- + H2O -> HNO2 + OH- kb =2.2 x 10^-11 2H2O -> H3O+ + OH- kw = 1.0 x10^-14 Write symbolic expression for equilibrium constants for each reaction. Derive expression for k1 in terms of ka, kb, and kw; find numerical value of k1.
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...
What is the pH of a 0.250 M aqueous solution of ammonium chloride (NH4+Cl-)? Kb (NH3) = 1.2 × 10-5 A. 5.04 B. 4.95 C. 4.77 D. 4.84 E. 6.26
Which of the following equations best describes the relationship
between vectors A, B, and C? I am not all the way sure how to solve
this. Can you please also explain why you picked the answer you did
at the end. Thanks!
Part II Three vectors A, B, and C are shown below. Question 7 which of the following equation best describes the relationship between vectors A, B, and C? OA BC B=A+C No equation can be written to relate...