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- Amphetamine (C,H13N) is a weak base with a pKp of 4.2. Part A Calculate the pH of a solution containing an amphetamine concentration of 235 mg/L. Express your answer to two decimal places. | ν ΑΣφ ? pH =Methylamine, CH3NH2, has a Kb of 4.4 x 10-4. What is the pH of a 0.54 M solution of methylamine? Your answer should be to two places past the decimal. Calculate the pH of a 0.21 M solution of hydrocyanic acid (HCN), which has a pKa of 9.31. Your answer should have 3 significant figures (i.e. 9.99).Atropine (C17H23 NO3) is a weak base with a pK₁ of 9.8. Part A Calculate the pH of a solution containing an atropine concentration of 299 mg L−¹. Express your answer to one decimal place. pH = ΑΣΦ ?
- pH + pOH = 1.0 x 10-14 is this true or false?Use the acidity model pH = − log[H+], where acidity (pH) is a measure of the hydrogen ion concentration [H+] measured in moles of hydrogen per liter of a solution.Compute [H+] for a solution in which pH = 5.8Which of the following has the strongest conjugate base? Group of answer choices benzoic acid (Ka = 6.5 x 10-5) hydrazoic acid (Ka = 1.9 x 10-5) chlorous acid (Ka = 1.1 x 10-2) carbonic acid (Ka = 4.3 x 10-7) chloroacetic acid (Ka = 1.4 x 10-3)
- Given that pKa = 3.14 at 25 deg C for HNO2, what is the pH of 0.173 mol L-1 NaNO2(aq) at 25 \deg C? What is the equilibrium concentration of HNO2? pH = Number (Give your answer accurate to 2 decimal places.) [HNO2]eq = Number mol L-1 (Give your answer accurate to 2 signficant figures.)Consider the following data on some weak acids and weak bases: base acid Κα a Ко name formula name formula hydrofluoric acid 4 HF 6.8 × 10 pyridine CH&N 1.7x10 acetic acid HCH3CO2 1.8 × 10¯¯ methylamine CH3NH2 4.4 × 10¯ -4 Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' 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. 0.1 M KCI solution PH ✓ choose one 1 (lowest) 0.1 M CH3NH3Br 0.1 M C5H5NHCI 0.1 M NaF 2 3 4 (highest) choose one v ХCalculate the pH at 25 °C of a 0.62 M solution of lidocaine HCI (C₁4H₂NONH₂CI). Note that lidocaine (C₁4H₂NONH) is a weak base with a pk of 7.94. Round your answer to 1 decimal place.
- Consider the following data on some weak acids and weak bases: acid base Ка K₂ name formula name formula 4 hypochlorous acid HCIO 3.0 × 10 ethylamine C₂H5NH₂ 6.4 × 107 acetic acid HCH3CO₂ 1.8 × 10 methylamine CH3NH₂ 4.4×10¯ " Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' 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 M C₂H5NH3CI ✓ choose one 1 (lowest) 0.1 M CH3NH3Br 2 3 0.1 M KNO3 4 (highest) 0.1 M NACIO choose one ✓Calculate the pH at 25 °C of a 0.47M solution of anilinium chloride (C6H5NH₂CI). Note that aniline (C6H5NH₂) is a weak base with a pk of 4.87. Round your answer to 1 decimal place.Consider the following data on some weak acids and weak bases: acid base Ka name formula name formula HNO2 ethylamine C2H;NH2 6.4 × 10 nitrous acid 4.5 x 10-4 hydrocyanic acid HCN 4.9 х 10 10 pyridine C;H;N |1.7x 109 Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' 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 M C5H5NHB choose one v 0.1 M KNO2 choose one v 0.1 M C2H5NH3CI choose one v 0.1 M NaCN choose one v