What [NH4Cl] must be added to a solution of 273 M NH3 (aq) to make a...
Question 18 3 pts What [NH4Cl] must be added to a solution of 273 M NH3(aq) to make a buffer of pH 9.402 O 1.82M 0.235 M O 5.17 M 0.386M 0.191M If poH = 8.8, what is [н']? pH рон [н'] [ОН ) 8.8 ? 1.6x 10:9 м o 5.5x 10:3М O 1.6x 105 м o 6.3x 10:6 м o 5.2 м
What amount of NH4Cl must be added to 50.0 mL of 0.30 M NH3 in order to produce a buffer of pH 9.00? Assume the addition of NH4Cl does not change the volume of the solution. Kb = 1.8 × 10-5 for NH3
How many moles of NH4Cl must be added to 3.0 L of aqueous 0.10 M NH3 to form a buffer whose pH is 9.00? Kb of NH3 is 1.8x10 (Assume addition of NH4Cl to the solution does not alter its volume). 0.36 O 0.54 0.18 O 0.42 0.11
How many grams of NH4Cl must be added to 0.100 L of 0.426 M NH3 to produce a buffer solution with pH= 9.34 ? pKa (NH4Cl) = 9.24 Units are not required on the answer. Round your answer to two decimal places.
a) Calculate the pH of a buffer system that contains o.200 M of NH3(aq) and o.200 M of NH4Cl(aq). The Kb of NH3(aq) is 18 x 10-5. Consult Textbook Numerical Answer pH b) Calculate the change in pH when 6.00 mL of 100 M HCl is added to 100.0 mL of the buffer solution. Numerical Answer: c) Calculate the change in pH when 6.00 mL of o.100 M NaOH is added to 100.0 mL of the buffer solution. Numerical Answer:
What is the ratio of [NH4Cl]/[NH3] in order to make a NH3/NH4Cl buffer solution with pH=8.70. (Kb for NH3 is 1.8 x 10^–5)
Calculate the change in pH when 3.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq). NH3 Kb=1.8x10^-5 Calculate the change in pH when 3.00 mL of 0.100 M NaOH(aq) is added to the original buffer solution.
A buffer solution consists of 0.00300 M ammonia (NH3) and 0.00500 M ammonium chloride (NH4Cl). What is the change in pH when 0.00100 moles of NaOH are added to one litre of the solution without any change in volume? The pKa of NH4+ is 9.24.
2) a) Calculate the change in pH when 8.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq). delta pH= ? b) Calculate the change in pH when 8.00 mL of 0.100 M NaOH(aq) is added to the original buffer solution. delta pH= ?
3. (a) Calculate the change in pH when 5.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq). (b) Calculate the change in pH when 5.00 mL of 0.100 M NaOH(aq) is added to the original buffer solution.