Consider a 0.294 M solution of HNO2 with a Kb of 1.79 x 10-11. The OH concentration would be _______ x 10^ ____
I have found some solutions online for this but they are all different. Please Help

Consider a 0.294 M solution of HNO2 with a Kb of 1.79 x 10-11. The OH...
Calculate the hydroxide concentration of a 0.024 M methylamine solution. Kb is 4.2 x 10-4 This problem has a second part in the problem below.... part 1 .What is the OH- concentration? B) Consider the same 0.024 M methylamine solution. Kb is 4.2 x 10-4 part 2 -- what is the pH?
Find the percent ionization of: a) a 1.05 M HC2H3O2 solution. Ka = 1.79 x 10-5 b.) a 2.50 M HNO2 solution. Ka = 4.60 x 10-4
You have nitrous acid, HNO2, Ka=4.0 x 10-4 Calculate the pH of the solution and calculate the concentration of HNO2 and its conjugate base in a 0.025 M HNO2 Solution. Please please show all work!
Calculate the (OH) and the pH of a 0.023-M methylamine solution; Kb = 5.0 x 10". [OH-] =D pH =
A solution of 0.025 M NH OH (K a) Calculate Kb 1.11 x 10) (20 p!) b) Calculate the (OH), INHOH) and (NH,OH'). c) Calculate the pH and pOH of the solution. d) What is the pH of the solution if the solution was mixed with 0.78 M NH,OH"?
What is the pH of 0.15 M aqueous nitrite ion? (Kb of NO2– = 1.7
× 10–11) NO2–(aq) + H2O(l) HNO2(aq) + OH-(aq)
PLEASE SHOW ALL WORK and GIVE ANSWERS WITH THE CORRECT NUMBER OF
SIGNIFICANT FIGURES AND UNITS :)
2. (10 pts) What is the pH of 0.15 M aqueous nitrite ion? (Kh of NO2 = 1.7 x 10"") NO2 (aq) + H2O(1) = HNO2(aq) + OH(aq)
Calculate the (OH) and the pH of a solution with an (H+] = 3.2 x 10-" Mat 25 °C. [OH-] = pH = Calculate the (H+) and the pH of a solution with an (OH) = 7.0 x 10 M at 25 °C. M [H*] pH Calculate the (H+) and the [OH-] of a solution with a pH = 8.56 at 25 °C. M M (он) Calculate either [H2O+] or [OH-] for each of the solutions. Solution A: [OH-] =...
1) Determine the pH of a 0.0785 M unknown weak base solution. Kb of the unknown weak base is 4.7 x 10−6. 2) An unknown weak acid solution with a concentration of 0.0850 M has a pH of 4.35. What is the Ka for this weak acid? 3) What is the pH of a 0.0380 M solution of HNO2? (Use your workbook to find Ka) 4) An unknown weak base solution with a concentration of 0.187 M has a pH...
What is the pH of a 0.2 M CH3CH2NH3(BrO) solution? Kb(ethylamine CH3CH2NH2)=4.3 x 10^-4 Ka (HBrO) = 2.3 x 10^-9 The answer is "pH 11", but I keep getting 11.96. (i compared Ka to kb and used Kb since it is bigger) then solved for pH using only Kb. Please explain the correct way of doing it if i was doing it wrong. thanks!
Calculate the molar concentration of OH− ions in a 0.075 M solution of ethylamine (C2H5NH2; Kb=6.4×10−4). Express your answer to two significant figures.