A chemist prepared aqueous solutions of two weak acids: solution A is butyric acid (HC3H8CO2), and solution B is nitrous acid (HNO2). At 25°C, the acid-dissociation constant (Ka) for butyric acid is 1.5 ✕ 10−5 and the base-dissociation constant (Kb) for the nitrite ion (NO2−) is 1.8 ✕ 10−11. Determine the following.
(a) the Ka value for nitrous acid (HNO2)
(b) the Kb value for the butyrate ion (C3H8CO2−)
A chemist prepared aqueous solutions of two weak acids: solution A is butyric acid (HC3H8CO2), and...
Question 1 (1 point) Nitrite ion isha weak base in aqueous solution; Kb is equal to 2.2 x 10-11. Calculate pKfor the nitrous acid HNO2. О 5.4 ОООО
Write the K, expression for an aqueous solution of nitrous acid , HNO2 : Kg The value of K, for nitrous acid is 4.50x104. What is the value of Kb, for its conjugate base, NO2? Submit Answer K, for nitrous acid, HNO2, is 4.50x10-4. Kfor benzoic acid, CH3COOH, is 6.30x10-5. K, for phenol (a weak acid), CH,OH, is 1.00×10-10. What is the formula for the weakest conjugate base? Submit Answer
A) Calculate the pH of a 0.0116 M aqueous solution of methylamine (CH3NH2, Kb = 4.2×10-4) and the equilibrium concentrations of the weak base and its conjugate acid. pH = ? [CH3NH2]equilibrium = ? M [CH3NH3+ ]equilibrium = ? M B)Calculate the pH of a 0.0115 M aqueous solution of nitrous acid (HNO2, Ka= 4.6×10-4) and the equilibrium concentrations of the weak acid and its conjugate base. pH = ? [HNO2]equilibrium = ? M [NO2- ]equilibrium = ? M C)...
Diethylamine ((C2H5)2NH) is a weak base. In aqueous solution at 25°C, it reacts with water to produce its conjugate acid, the diethylammonium ion ((C2H5)2NH2+), and the hydroxide ion (OH −). (a) If the base-dissociation constant (Kb) of diethylamine is 7.0 ✕ 10−4, calculate the acid-dissociation constant (Ka) for the conjugate acid. (b) What are the corresponding pKa and pKb values for this conjugate acid-base pair? pKa pKb
Calculate the pH of a 0.383 M aqueous solution of nitrous acid (HNO2, Ka = 4.5×10-4) and the equilibrium concentrations of the weak acid and its conjugate base. pH = [HNO2 ]equilibrium = M [NO2- ]equilibrium = M
Consider the following data on some weak acids and weak bases: acid name hypochlorous acid nitrous acid formula HCIO 3.0 x 108 HNO2 4.5 x 10-4 base Kb name formula ammonia NH; 1.8 x 10-5 hydroxylamine HONH2 1.1 10- Use this data to rank the following solutions in order of increasing pH. In other words, select a 'l' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest...
Consider the following data on some weak acids and weak bases: acid Ka name formula nitrous acid HNO2 ×4.510−4 acetic acid HCH3CO2 ×1.810−5 base Kb name formula ammonia NH3 ×1.810−5 ethylamine C2H5NH2 ×6.410−4 Use this data to rank the following solutions in order of increasing pH. In other words, select a ' 1 ' next to the solution that will have the lowest pH, a ' 2 ' next to the solution that will have the next lowest pH, and...
An aqueous solution is made with the salt obtained from combining the weak acid acetic acid, CH3CO2H, and the weak base methylamine, CH2NH2. Is the solution acidic, basic, or neutral? Ka=1.8×10−5 and Kb=4.4×10−4
Consider two aqueous solutions of nitrous acid (HNO2). Solution A has a concentration of (HNO2] = 0.25 M and solution B has a concentration of (HNO2] = 1.55 M. You may want to reference (Page 743) Section 16.6 while completing this problem. Part A Which statement about the two solutions is true? O Solution B has the higher percent ionization and the higher pH. O Solution A has the higher percent ionization and the higher pH. O Solution B has...
Help plz Close Problens Calculate the pH of a weak acid solution (IHAb 100.Ka). Calculate the pH of a 0.406 M aqueous solution of nitrous acid (HNO,, K-4.5x10) and the equilibrium concentrations of the weak acid and its conjugate base. pHH [HNO2 lequilibrium NO2 lequilbrium Show Approach