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- 6-82 (Chemical Connections 6C) A solution contains 54 mEq/L ofCI- and 12 mEq/L of HCO3-. If Na+ is the only cation present in the solution, what is the Na+ concentration in milliequivalents per liter?The proton donor in the reaction below is: * CH,COOHag) + H,0, → H,O^ (aq) + CH,CO ag) (1) CH;COOH O°H O O H,0" O CH,CO01Ibuprofen (also known as Brufen) is an analgesic (pain killer) and anti-inflammatory drug. It is a weak carboxylic acid (Chemical Formula: C12H17C00H; K = 1.2 x 10-5). A Medical student from Lusaka Apex Medical University (LAMU) prepared a 0.4 M solution of Brufen to give to an accident victim with minor injuries but in a lot of pain. on i. Write a reaction equation showing how Brufen ionizes in water. ii. Write the acid ionization constant expression for Brufen iii. Calculate the percent ionization of Brufen in water Select one: O A C12H17COOH(ag) + H2OM → C12H17CO0'(aq) + H3O*(aq)} K = [C;;H1¬CO0"][H30*]. [C1,H17COOH][H=0] 0.55% %3D OB. + C12COO(ag) + H3O*(aq); K= [C1;;H17C00"][H,o*j. [C2H17COOH] C12COOH(a) + H2O¶ 0.55% C12COOH(ag) + H2O) → C12COO (aq) + H30*(aq), K = [C1;H3;C00"][H30*]. [C,2H17COOH][H=0] 0.0022 %3D [CH1,CO0"][H30*]. [C1H17COOH] Go O D. C12H17COOH + H2O C12H17CO0* + H3O*|K = 0.55% %3D
- 10. If 29.50 mL of 0.175 M nitrous acid neutralizes 50.0 ml. of harium hydroxide, what is the molarity of the base? 2HNO;(aq) + Ba(OH);(aq) Ba(NO:)(aq) + 2H;O(1)In the following acid-base equilibria of weak acids in water, label the acid (A), the base (B), the conjugate acid (CA), and the conjugate base (CB). HCIO, (aq) + H,O(1) = H,O*(aq) + CI0, (aq) H,CO, (aq) + H,O1) – H;O*(aq) + HCO; (aq) Answer Bank H,O(1) + CH;NH†(aq) = CH,NH,(aq) + H;O*(aq) СА А B СВ CH, COOH(aq) + H,O(1) - CH;COO (aq) + H;O*(aq)NaHCO3 (aq) + CH3 COOH (aq) —> CO2 (g) + H2O (l) + CH3 COONa (aq) Calculate the molar concentration of 100ml of vinegar (CH3COOH) and 2.5 ml of baking soda (NaHCO3). Note that the concentration of table vinegar is about 1 mol/L and the density of baking soda is 2.2 g/cm3
- + NaOCI NaOH H₂O ?||| O crosoft O 3 Sodium hydrogen carbonate (NaHCO3), also known as sodium bicarbonate or "baking soda", can be used to relieve acid indigestion. Acid indigestion is the burning sensation you get in your stomach when it contains too much hydrochloric acid (HCI), which the stomach secretes to help digest food. Drinking a glass of water containing dissolved NaHCO3 neutralizes excess HCl through this reaction: HCl(aq) + NaHCO3(aq) NaCl(aq) + H₂O(l) + CO₂(g) The CO₂ gas produced is what makes you burp after drinking the solution. Suppose the fluid in the stomach of a man suffering from indigestion can be considered to be 200. mL of a 0.072 M HCl solution. What mass of NaHCO3 would he need to ingest to neutralize this much HCl ? Be sure your answer has the correct number of significant digits. W CHEMICAL REACTIONS Solving for a reactant in solution Microsoft Microsoft 6.52.210... 08 g Explanation 10 Check 280 x10 X 2 NOV 13 Ś ||| - K Jay SETMANES tv ♫ MacBook Pro DZA . E © 2022 McGraw Hill…Given CH4 + 4F2 CF4 + 4HF AH - 401.0 kcal/mol The AH (in kJ/mol) for the reaction 12CF4 + 2HF→ CH4 + 2F₂ is kJ/mol.
- true or false? The following reaction equation is a redox reaction: 2H2O (l) + 2Cl- (aq) ⟶ H2 (g) + Cl2 (g) + 2OH- (aq)HgOA), H₂O/THE NaBHComplete the balanced chemical equation for the following reaction between a weak acid and a strong base. H₂S (aq) + KOH(aq) → 2- 3C₂² 1 2 + (s) S 3 K Reset 4 (1) 5 6 LO O 7 (g) ㅈ H 8 9 11 (aq) Submit X 0 • x H₂O