The solubility of 1-naphthylamin,
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General Chemistry: Principles and Modern Applications (11th Edition)
- Acrylic acid is used in the polymer industry in the production of acrylates. Its K, is 5.6 X 10“’. What is the pH of a 0.11 M solution of acrylic acid, CH2CHCOOH?arrow_forward1. The ionization constant (K») of aniline (C6HSNH2) is 2.35 x 10-5, If 7.285 grams of aniline is dissolved in 100.0 mL of water, what are the equilibrium concentration of all species present? 2. A certain acidic vitamin is essential for all mammals since it plays a role in DNA repair and cell signaling. A 0.439 M solution of this acid is found to have a pH of 2.607. Based on the table below, what most likely is the identity of this unknown acid?arrow_forwardACID-BASE EQUILIBRIA Doc Jill wants to determine the Ao of a weak acid she isolated called Xcitingpartic acid (HXp). She prepared a solution of the weak acid by diluting 2.7 ml of 0.20 M HXp with 19.3 mlL of water. Upon measuring the conductivity of the solution and a blank, she obtained 205.0 µS/cm and 2.0 uS/cm, respectively. She also measured the pH of the solution and got a pH of 3.49. Help her find the following: 1. Concentration of the weak acid (HXp) after dilution 2. Corrected conductivity 3. Molar conductivity of the solution 4. Equilibrium concentration of H30, and Xp 5. a 6. Equilibrium concentration of the weak acid (HXp) 7. K, 8. Aoarrow_forward
- 1. The ionization constant (Kb) of aniline (C6H5NH2) is 2.35 x 10^-5. If 7.285 grams of aniline is dissolved in 100.0 mL of water, what are the equilibrium concentration of all species present?2. A certain acidic vitamin is essential for all mammals since it plays a role in DNA repair and cell signaling. A 0.439M solution of this acid is found to have a pH of 2.607. Based on the table below, what most likely is the identity of thisunknown acid?arrow_forwardWhat are the concentrations of H+ and OH− in asolution of 0.02 M NaOH?arrow_forwardPyridine is a weak organic base, and readily forms a salt with hydrochloric acid. C,Н,N(aq) + HCI(aq) 2 С,H;NH* (aq) + CI (aq) What is the pH of a 0.062 M solution of pyridinium hydrochloride, [C;H;NH]+ CI, if Kp for pyridine is 1.5 x 10-9? pH =arrow_forward
- Write the chemical reactions whose equilibrium constants are Kp and Ką for imidazole (C,H,N,) and imidazole hydrochloride (C,H,N,H*CI¯), respectively. K, reaction: 2.865 Incorrect K, reaction: 2.323 Incorrect Calculate the pH of a solution prepared by mixing 1.60 g of imidazole with 1.60 g of imidazole hydrochloride and diluting to 100.0 mL. The pKą of imidazole hydrochloride is 6.993. 2.07 pH Incorrect Calculate the pH of the solution if 2.00 mL of 1.06 M HCIO, are added. pH = Incorrect How many milliliters of 1.06 M HCI,, should be added to 1.60 g of imidazole to give a pH of 6.993? 2.865 volume: mL. Incorrectarrow_forwardA 1.034-g sample of impure oxalic acid is dissolved in water and an acid-base indicator added. The sample requires 34.47 mL of 0.485 M NaOH to reach the equivalence point. What is the mass of oxalic acid and what is its mass percent in the sample?H2C2O4(aq) + 2NaOH(aq) ⇌ Na2C2O4(aq) + 2H2O(l)arrow_forwardThe concentration of acetylcholine (a neurotransmitter) in a sample can be determined from the pH changes that accompany its hydrolysis. When the sample is incubated with the enzyme acetylcholinesterase, acetylcholine is converted to choline and acetic acid, which dissociates to yield acetate and a hydrogen ion. CНз CHз Нао — сHz— CH "N— снз но-сн— сH,-"N-CH; + CH;— с-о+ н* CH3-C-0- сHз CHз Choline Acetylcholine Acetate In a typical analysis, 11 mL of an aqueous solution containing an unknown amount of acetylcholine had a pH of 7.70. When incubated with acetylcholinesterase, the pH of the solution decreased to 6.89. Assuming there was no buffer in the assay mixture, determine the number of moles of acetylcholine in the 11 mL sample.arrow_forward
- A patient presents itself to the emergency department in a critical condition. The patient’s blood was tested and the concentration of carbonic acid (H2CO3) was found to be 5.4×10-6 M and bicarbonate ion (HCO3-) 9.917 ×10-5 M Ka = 4.3 × 10-7 H2CO3(aq) ⇌ HCO3-(aq) + H+(aq) Show all calculations including equation(s) used. Calculate the pH of the patients’ blood. Based on your answer would you say the patient is suffering from Acidosis or Alkalosis?arrow_forwardA strong base, such as sodium hydroxide (NAOH), is added in a solution of 0.1 mol/L acetic acid (CH3COOH, pka = 4.7). The pH after the addition of the strong base is 10. What is the concentration of acetic acid (CH3COOH) in the solution in mol/L after the addition of the base? O 5 10-6 mol/L O 0.1 mol/L 10-10 mol/L O 0.009 mol/Larrow_forwardA solution of hydrocyanic acid is prepared by dissolving 0.10 mol HCN in enough water to make 1.0 L of solution. If 0.0050 mol of NaCN is added to the solution with no increase in volume, what is the concentration of H+ when equilibrium is re-established? Use concentrations to get equilibrium constant. CN ions added and used Na+ as a spectator ion.arrow_forward
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