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- What is the freezing point of vinegar, which is an aqueous solution of 5.00% acetic acid, HC2H3O2, by mass (d=1.006g/cm3)?Consider the following chemical equilibrium for the weak base CN in water: CN- (aq) + H₂O(1) = HCN (aq) + OH(aq). Which of the following statements is correct when more water is evaporated from system? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a b C d pH will go up; [OH-] will go up; net amount of OH will go up pH will go down; [OH-]will go up; net amount of OH will go down pH will go down; [OH-]will go down; net amount of OH will go down pH will go up; [OH-] will go up; net amount of OH will go downThe base protonation constant K of morpholine (C4H₂ONH) is 2.14 x 10 Calculate the pH of a 1.5 M solution of morpholine at 25 °C. Round your answer to 1 decimal place. pH = ☐ X
- The base protonation constant K₁ of lidocaine (C14H21 NONH) is 1.15 × 10 Calculate the pH of a 0.88 M solution of lidocaine at 25 °C. Round your answer to 1 decimal place. pH = ☐ xCH3CH2CO2H , Ką = 1.3 x 105 CH3CH2CO2 , Kp = 7.7 x 10-10 F, Kp = 1.4 x 10-11 HF , Ką = 7.2 x 10-4 For the reaction between propanoic acid (CH3CH2CO2H) and a solution containing fluoride ions (F"): (a) The name of the conjugate base produced is (b) The name of the conjugate acid produced is (c) The reaction is favoured (write 'reactant' or 'product'), because the reactants are the (write 'weaker' or 'stronger') set of acid and base.نقطتان )2( The pH of a 1.00 M Solution -1 of Nitrous acid HNO2 (pKb =10.6) is
- Consider the following data on some weak acids and weak bases: acid base Ка K, name formula name formula -4 6.8 x 10 ethylamine C,H,NH, 6.4× 10 -4 hydrofluoric acid HF HCH,CO2 1.8 ×x 10 CH;N |1.7× 10 -5 acetic acid pyridine 1.7 x 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 pH, and so on. solution pH 0.1 М KI choose one 0.1 M NaF choose one 0.1 М C2HsNHзBr choose one 0.1 M C5H5NHCI choose oneWhat the pH of a solution containing [OH] = 8.66 x 10-2 mol L1? Report your answer to at least 1 decimal place.The base protonation constant K; of azetidine (C3H,NH) is 1.5 x 10. Calculate the pH of a 0.31 M solution of azetidine at 25 °C. Round your answer to 1 decimal place. pH = 0 ?
- The Ka of a weak acid is 3.33 x 10-5, what is the pKb of it's conjugate base?The base protonation constant K of morpholine (C₂HONH) is 2.14 × 10¯6. Calculate the pH of a 1.0 M solution of morpholine at 25 °C. Round your answer to 1 decimal place. pH = XWhat is the pH of a 0.370 M aqueous solution of methylammonium chloride, CH3NH3Cl? The Kb of methyl amine, CH3NH2 is 4.4x10-4. You do not need to solve the quadratic equation for this problem. Express your answer to two decimal places.