A certain amount of nitrous acid is dissolved in water at 25℃. At equilibrium, the pH of the solution is 2.33. What is the concentration of H30+ (aq) and NO2-(aq)?
![Inderdhanush Page : Date: / HNO HNO +HO - H+ No Hot + No- At Equilibrium pH= 2.33 ĐH: - Dạ H) : 233 [ht] = 0.00467M [H] = [NO](http://img.homeworklib.com/questions/02a755c0-d24c-11eb-886d-8d159052c6a8.png?x-oss-process=image/resize,w_560)
A certain amount of nitrous acid is dissolved in water at 25℃. At equilibrium, the pH...
1. A certain amount if nitrous acid is dissolved in water at 25 celcius. At equilibrium, the pH of the solution is 2.33. What is the concentration of H3O+ and NO2-? 2. Calculate the valye if the equilibriym constant at 25 celcisus for the reaction: HNO2+OH- -> H2O + NO2-
Now calculate the [H+] and pH of a 0.00725
M solution of nitrous acid.
Nitrous acid (HNO2) is a weak acid that partially dissociates as follows, with a Ka = 0.0004266: HNO2 + H20 + H30+ + NO2 a) Calculate the [h+] and pH of a 1.73 M solution of nitrous acid. [H+]=49) 0.0270 b) pH = 49 1.57 c) Now calculate the [H+] and pH of a 0.00725 M solution of nitrous acid. 49) 0.0016 d) 49 1.7
explain why please
3. Consider the following equilibrium for nitrous acid, HNO2, a weak acid: HNO3(aq) +H2O(l) — H30*(aq) + NO2 (aq) In which direction will the equilibrium shift if -a. NaOH is added? right diplllspintado 2102 b. NaNO, is added? Shift to Wt to cleanace NO2 - C. HCI is added? Just d. The acid solution is made more dilute? OM assumen d ie da .
Consider a 0.49 M solution of HNO, nitrous acid (K, = 4.0 x 10-4). Mark the major species in the solution. ΒΗΝΟ, NO2 H20 OH Complete the following ICE Table (in terms of "x", the amount of nitrous acid which dissociates). Minus signs must be included, omit positive signs and omit molarity units (they are assumed). [HNO21 [H" [NO2) Initial Change Equilibrium 0.49 - X What is the equilibrium concentration for NO2 [NO2) = Calculate the pll of the solution....
Need help on questions 1-3
Henderson-Hasselbalch: pH=pka + Log( [base]/(acid] ) 1. The value of Ka of nitrous acid (HNO2) is 4.6 x 104 M. Calculate the pH and the concentration of [H3O+] in a 0.02M aqueous solution of HNO2(aq). 2. Label conjugate acid-base pairs: HNO2(aq) + H2O → H30* + NO2 (aq) 3. What will happen to the reaction equilibrium if we increase the pressure in the reaction vessel? H2(g) + 12(e) → 2 HI(g)
Consider the following equilibrium for nitrous acid, HNO2, a weak acid: HNO2 (aq) + H2O (l) <--------------> H3O+ (aq) + NO2- In which direction will the equilibrium shift if a) NaOH is added? b) NaNO2 is added? c) HCl is added? d) The acid solution is made more dilute?
A solution of nitrous acid, HNO2 is 6.3x10^-3 M, which is a weak acid with Ka=7.2x10^-4. Calculate: [HNO2] [NO2] pH What is the concentration of a nitrous acid solution with a pH of 2.21
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
1. A 1.00 liter solution contains 0.46 M nitrous acid and 0.35 M sodium nitrite. If 30.0 mL of water are added to this system, indicate whether the following statements are true or false. (Note the the volume MUST CHANGE upon the addition of water.) _______TrueFalseA. The concentration of HNO2 will remain the same. _______TrueFalseB. The concentration of NO2- will decrease. _______TrueFalseC. The equilibrium concentration of H3O+ will remain the same. _______TrueFalseD. The pH will increase. _______TrueFalseE. The ratio of...
6. Enough of a sparingly soluble salt AB(s) dissolved in a certain amount of water to bring it into equilibrium with the ions A" (aq) and B (aq). If the equilibrium concentration of A*? is 4.9 x 10 mol kg"', and the Debye Hückel Limiting Law (DHLL) is obeyed at this concentration, K sp for the salt is: A) 2.11e-9 B) 4.90e-9 C) 4.86e-10 D) 8.46e-9 E) 3.91e-10