What is the pH after 20.0 mL of 1.0 M NaOH is added to a 1.0-L buffer solution composed of0.50 M C6H5NH2 and 0.25 M C6H5NH3CI?3.534.988.549.58O 6.29

Answered: What is the pH after 20.0 mL of 1.0 M…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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What quantity in moles of CH₃NH₃Cl need to be added to 200.0 mL of a 0.500 M solution of CH₃NH₂ (Kb for CH₃NH₂ is 4.4 × 10⁻⁴) to make a buffer with a pH of 10.90?
please do only the highlighted qouestion
Find the pH of the following buffer solutions: 100 M in acetic acid (HC2H3O2) and 0.100 M in sodium acetate (NaC2H3O2) 16 M in NH3 and 0.22 M in NH4Br 50 mL of 0.15 M HCHO2 with 75.0 mL of 0.13 M NaCHO2
4. Consider a buffer made by adding 0.050 mol NaC2H302 and 0.040 mol HC2H3O2 to a liter of water. a) What is the pH of this buffer? b) What is the pH after addition of 0.010 mol NaOH? c) What is the pH after addition of 0.010 mol HCI to the original buffer solution?
Consider the buffer system of ammonia, NH3, and ammonium ion NH4+. (Ka= 5.6 x 10-10). a) What is the pH of a buffer solution prepared by adding 30.0g of ammonium chloride (NH4Cl) to 600 mL of .400 M ammonia? b) What is the pH of the solution after 100.0 mL of 2.0 M NaOH are added to the solution from part (a)? c) What is the pH of the solution after 100.0 mL g 1.0 M HCl are added to the solution from part (a)? d) What is the pH of the solution after 30g of NaOH are added to the solution from part (a)?
What will be the pH of the final solution if 1.50 x 10-2 mol HCl solution is added to the buffer solution (100 mL) that contains 1.0 M HCN and 1.2 M NaCN?
How many grams of dry NH4Cl need to be added to 2.50 L of a 0.300 M solution of ammonia, NH3 , to prepare a buffer solution that has a pH of 8.74? Kb for ammonia is 1.8×10−5 . (Please type answer no write by hend)
In the titration of 25.0 mL of 0.1 M CH3COOH with 0.1 M NaOH, how is the pH calculated before the titrant is added? Group of answer choices The pH is based on the concentration of protons present in the solution, which is equal to the original concentration of the acid. The pH is calculated using the H-H equation for a buffer solution, using the ratio of the concentrations of the base and the acid, and the pKa of the acid. The pH is 7. The pH is calculated by determining the concentration of weak conjugate base present in the solution, using an ICE table to calculate the hydroxide ion concentration present after hydrolysis, subtracting pOH from 14, and taking the negative log of the result. The pH is calculated by determining the concentration of excess hydroxide ions in the solution, subtracting pOH from 14, and taking the negative log of the result. The pH is calculated by determining the concentration of weak acid present in the solution, using an ICE table to calculate…
A buffer is made by combining 20.0 ml. 0.250 M NHACl with 30.0 mL 0.250 M NH3. A) Calculate the pH of the buffer after 1.00 mL of 6.00 M HCI is added and equilibrium is re-established. B) Calculate the pH of the buffer after 1.00 mL of 6.00 M NaOH is added and equilibrium is re-established. Please help with both parts
Which of the following aqueous mixtures will result in a buffer with a pH higher than 7.0? (For HCNO, Ka = 2.2×10-4, for NH3, Kb = 1.8×10-5 ) 10 mL of 0.1 M NH3 + 10 mL of 0.1 M HCl 10 mL of 0.1 M NH3 + 10 mL of 0.1 M HCNO 10 mL of 0.1 M NH3 + 5.0 mL of 0.1 M HCl (Correct answer) 10 mL of 0.1 M HCNO + 10 mL of 0.1 M NaOH 10 mL of 0.1 M HCNO + 5.0 mL of 0.1 M NaOH please explain. thanks!
19) What is the solution pH when 0.10 mol of H+ is added to a 2.0-liter buffered solution created from 0.31 M NH3 (Kb = 1.8 × 10–5) and 0.26 M NH4F.
How many grams of dry NH4Cl need to be added to 1.70 L of a 0.600 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 9.00? Kb for ammonia is 1.8×10^-5

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What is the pH after 20.0 mL of 1.0 M NaOH is added to a 1.0-L buffer solution composed of 0.50 M C6H5NH2 and 0.25 M C6H5NH3CI? 3.53 4.98 8.54 9.58 O 6.29