Calculate the pH of a 0.0607 M solution of trimethylamine. The Kp of trimethylamine, (CH3)3N, is 6.4x10-5 Write your answer to 2 significant figures.
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A: Given: Concentration of HCN = 3.6 M Ka = 6.2×10-10
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Q: 6. What is the pH of a 0.25 M solution of methylamine hydrochloride (CH3NH3CI)? Kb for methyl amine…
A: This ia a salt of weak base and strong acid. So apply formula for salt of weak base and strong acid.
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Q: The acid dissociation constant K, of hydrocyanic acid (HCN) is 6.2 x 10 -10 Calculate the pH of a…
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Q: The ionization constant (Kb) of aniline (C6HSNH2) is 2.35 x 10-5, If 7.285 grams of aniline is…
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Q: The hydroxide ion concentration, [OH*], of an aqueous solution of 0.591 M trimethylamine (a weak…
A: Trimethylamine dissolved in H2O and since it is a weak base so it dissociates partially as follows
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Q: The acid dissociation constant K, of alloxanic acid (HC,H,N,0,) is 2.24 × 10". Calculate the pH of a…
A:
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Q: Q2 :- Calculate the value of the ionization constant, K, for aniline if the pK, is 10.5?
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- COHSOH(ag) + H2On + CeHsO (aq) + H3O*(a9) Ka= 1.12 x 10-10 (a) Phenol is a weak acid that partially dissociates in water according to the equation above. Write the equilibrium-constant expression for the dissociation of the acid in water. (b) What is the pH of a 0.75 M CaHsOH(ag) solution? (C) For a certain reaction involving CaHsOH(ag) to proceed at a significant rate, the phenol must be primarily in its deprotonated form, C3H5O (eg). In order to ensure that the CsHsOH(aq) is deprotonated, the reaction must be conducted in a buffered solution. On the number scale below, circle each pH for which more than 50 percent of the phenol molecules are in the deprotonated form (CoHsO (aq). Justify your answer. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Justification: (d) CeHsOH(ag) reacts with NaOH(ag). Write a net ionic equation representing this reaction (aka: invasion equation). (e) What is the pH of the resulting solution when 30 mL of 0.40 M CSH5OH(aq) is added to 25 mL of 0.60 M NAOH. Show all work…The pH of an aqueous solution of 0.400 M hydrocyanic acid, (Ka (HCN) = 4.00 × 10-10) isThe pH scale for acidity is defined by pH log H| where H"| is the concentration of hydrogen ions measured in moles per liter (M). (A) The pH of Drano is 13.3. Calculate the concentration of hydrogen ions in moles per liter (M). Note: You may have to type in a lot of zeros. For example, an answer could be something like this 0.000000000000123. Or you can type your answer in scientific notation, such as 1.23*10-13 [H*] = (B) The pH of lemon juice is 2.0. Calculate the concentration of hydrogen ions in moles Niter (M). per [H*] =
- What is the pH of a 0.1 M solution of methylamine hydrochloride (CH3NH3Cl), if pKb of CH3NH2 = 4?Predict whether aqueous solutions of the following substances are acidic, basic, or neutral and write hydrolysis equations for the acidic and basic solutions. (a) CsBr; (b) Al(NO3)3; (c) KCN; (d) CH3NH3Cl3. A 0.0560 g quantity of acetic acid is dissolved in enough water to make 50.0 mL of solution. Calculate the concentrations of H;O*, CH;COO and CH;COOH at equilibrium. What is the pH of the solution? (Ka = 1.8x10) CH;COOH(aq) = CH;COO (aq) + H;O* (aq) a) Calculate the initial concentration of CH;COOH. (C:12; H:1; 0:16) b) Calculate the concentration of CH;CoO (aq) and H;O* (aq) at equilibrium. c) Calculate pH of the solution.
- Calculate the pH of a solution prepared by dissolving 0.482 mol of benzoic acid and 0.104 mol of sodium benzoate in water sufficient to yield 1.00 L of solution. The K, of benzoic acid is 6.30 x 105. CHSCOOH(aq) + H2O(1) = H3O*(aq) + C6H5CO2 (aq) K = 6.30 × 10-5 A pH = pK, + log; [HA] [* ] %3DThe amino acid asparagine has ionization constants Kal = 6.92 x 10-3 and K ₁2 = 6.92 x 10-3 and K₁2 = 1.86 x 10-9, which correspond to the carboxylic acid group and the amino group respectively. Calculate the pH of a 0.170 M asparagine (HN) solution. pH =The active ingredient of bleach such as Clorox is sodium hypochlorite (NaClO). Its conjugate acid, hypochlorous acid (HClO), has a Ka of 3.0 × 10^–8. (a) The undiluted bleach contains roughly 1 M NaClO. Calculate the pH of 1 M NaClO solution. (b) Some applications require extremely diluted bleach solution, such as swimming pools. Suppose the solution in (a) is diluted by 10,000 -fold. Calculate the pH of the diluted solution, and demonstrate that you can still neglect the autoionization of water in your calculation. (c) Suppose the solution in (a) is diluted by 1 million-fold, briefly explain how your approach will be different. Write the equation with [H3O+] as the unknown, but you do not need to solve it.
- Determine the pH of each of the following solutions (Ka and Kb values can be found in the appendices of your textbook or online): (a) 0.045 M hypochlorous acid; (b) 0.0068 M phenol; (c) 0.080 M hydroxylamine.The Ka of a weak acid is 3.33 x 10-5, what is the pKb of it's conjugate base?The active ingredient of bleach such as Clorox is sodium hypochlorite (NaClO). Its conjugate acid, hypochlorous acid (HClO), has a Ka of 3.0 × 10–8. (a)The undiluted bleach contains roughly 1 M NaClO. Calculate the pH of 1 M NaClO solution. (b)Some applications require extremely diluted bleach solution, such as swimming pools. Suppose the solution in (a) is diluted by 10,000 -fold. Calculate the pH of the diluted solution, and demonstrate that you can still neglect the autoionization of water in your calculation. (c)Suppose the solution in (a) is diluted by 1million-fold, briefly explain how your approach will be different. Write the equation with [H3O+] as the unknown, but you do not need to solve it.