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The formation of zwitterionic glycine,
Use the data in Table
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Physical Chemistry
- Physiological pH in humans is pH = 7.3. At this pH, would cellular carboxylic acid citric acid (Kal 7.08 x 104) exist primarily as the undissociated free acid or as its dissociated carboxylate form? From the choices provided below, indicate whether the carboxylic acid will exist primarily in its protonated form as a Free Acid or in its deprotonated form as a Carboxylate Anion by clicking on the corresponding button. At equilibrium in this pH, the concentration of the preferred form of the acid is approximately | times higher than the concentration of its conjugate form. Round to the nearest order of magnitude.arrow_forwardFill in the left side of this equilibrium constant equation for the reaction of diethylmethylamine (C3H13N), a weak base, with water. D= K, oloarrow_forward85. Propane, C3H8, is a hydrocarbon that is commonly used as a fuel. (a) Write a balanced equation for the complete combustion of propane gas. (b) Calculate the volume of air at 25 °C and 1.00 atmosphere that is needed to completely combust 25.0 grams of propane. Assume that air is 21.0 percent O2 by volume. (Hint: We will see how to do this calculation in a later chapter on gases—for now use the information that 1.00 L of air at 25 °C and 1.00 atm contains 0.275 g of O2 per liter.) (c) The heat of combustion of propane is −2,219.2 kJ/mol. Calculate the heat of formation, ΔH∘fΔHf° of propane given that ΔH∘fΔHf° of H2O(l) = −285.8 kJ/mol and ΔH∘fΔHf° of CO2(g) = −393.5 kJ/mol. (d) Assuming that all of the heat released in burning 25.0 grams of propane is transferred to 4.00 kilograms of water, calculate the increase in temperature of the water.arrow_forward
- How do I fill out this chart Reactions: NaHCO3(s) + HCl(aq) → NaCl(s) + CO2(g) + H2O(l) Na2CO3(s) + 2HCl(aq) → 2NaCl(s) + CO2(g) + H2O(l)arrow_forward(a) When the metallic element sodium combines with the nonmetallic element bromine, Br2(l), how can you determine the chemical formula of the product? How do you know whether the product is a solid, liquid, or gas at room temperature? Write the balanced chemical equation for the reaction. (b) When a hydrocarbon burns in air, what reactant besides the hydrocarbon is involved in the reaction? What products are formed? Write a balanced chemical equation for the combustion of benzene C6H6(l), in air.arrow_forwardCalculate the enthalpy of reaction of the following equation: NaOH(s)+aq=Na(aq)+OH^-, NaHCO3(s)+aq=Na(aq)+HCO3^-,arrow_forward
- K2SO4 + NaOHarrow_forwardAscorbic acid, H₂C6H6O6, is a diprotic acid usually known as vitamin C. For this acid, pk1 is 4.10 and pKa2 is 11.79. When 125 mL of a solution of ascorbic acid was evaporated to dryness, the residue of pure ascorbic acid had a mass of 3.30 g. Calculate the molar concentration of ascorbic acid in the solution before it was evaporated. i What was the pH of the ascorbic acid solution before it was evaporated? pH = i What was the concentration of the ascorbate ion, C6H6062, before the solution was evaporated? i M Marrow_forwardWrite the basic equilibrium equation for (CH₃)₂NH and C₆H₅O⁻.arrow_forward
- Explain the reaction between Methyl Salicylate with acetyl chloride (CH3COCl). Gives your answer in detail from the name of the reaction until the formation of the product. You are advised to give an illustration of the reaction.arrow_forwardPredict the products of the following reaction. If no reaction will occur, use the NO REACTION button. Be sure your chemical equation is balanced! (CH) (OH)₂() + O₂(g) → 0arrow_forwardBased on the Lewis structures of the reactants and product of the following equation, identify the Lewis acid and the Lewis base in it: CO, + OH → HCO, =c=0: + :0-H H-0- O: O Lewis acid: CO,; Lewis base: HCO, O Lewis acid: OH; Lewis base: CO, O Lewis acid: CO; Lewis base: OH-arrow_forward
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage LearningChemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning