Calculate the pH of the following buffer system. 0.500 M NH3 ( Kb=1.8×10^(-5) ) 0.500 M NH4 Br A. 4.74 B. 9.26 C. 7.00 D.0.30 E. 13.70 I got 4.74
Calculate the pH of the following buffer system. 0.500 M NH3 ( Kb=1.8×10^(-5) ) 0.500 M...
38. A buffer solution is 0.40 M NH3 and 0.60 M NHACI. Kb for NH3 is 1.8 x 10-5 a) Calculate the pH for the buffer system. b) Calculate the pH of the solution after adding 0.00600 moles of NaOH to 400.0 mL of the buffer. c) Calculate the pH of the solution after adding 0.050 moles of HCl to 600.0 mL of the buffer.
3) Kb for NH3 1.8 x 10-5 a) Calculate the pH of a buffer solution that is 0.100 M NH3 and 0.120 M NHANO3. b) What is the pH after 60.0 mL of 0.010 M HCl is added to 90.0 mL of the buffer solution in 2(a). Assume the change in volume is additive. c) What is the pH after 60.0 mL of 0.010 M Ca(OH)2 is added to 90.0 mL of the buffer solution in 2(a). Assume the change...
The Ka for acetic acid, CH3COOH, is 1.8 × 10-5. A buffer, made from 0.10 M CH3COOH and 0.10 M CH3COO- has a pH of ________. a. 4.74 b. 14.00 c. 1.00 d. 9.26 e. 7.00
A 75.0-mL volume of 0.200 M NH3 (Kb=1.8×10−5) is titrated with 0.500 M HNO3. Calculate the pH after the addition of 13.0 mL of H
Part A ) Calculate the pH of 0.20 M NH3 (Kb=1.8×10−5). Express your answer using two decimal places. Part B) Calculate the concentrations of all species present in 0.20 M NH3 (Kb=1.8×10−5). Express your answers using two significant figures separated by commas. Enter the concentrations of the species in the order listed below. [NH4+],[NH3],[OH−],[H3O+] = ?,?,?,?
A 75.0-mL volume of 0.200 M NH3 (Kb=1.8×10?5) is titrated with 0.500 M HNO3. Calculate the pH after the addition of 28.0 mL of HNO3. Express your answer numerically.
Titrations Part A A 75.0-mL volume of 0.200 M NH3 (Kb=1.8×10−5) is titrated with 0.500 M HNO3. Calculate the pH after the addition of 19.0 mL of HNO3. Express your answer numerically. Part B A 52.0-mL volume of 0.35 M CH3COOH (Ka=1.8×10−5) is titrated with 0.40 M NaOH. Calculate the pH after the addition of 23.0 mL of NaOH. Express your answer numerically.
A 75.0-mL volume of 0.200 M NH3 (Kb=1.8×10-5) is titrated with 0.500 M HNO3. Calculate the pH after the addition of 11.0mL of HNO3.A 52.0-mL volume of 0.35 M CH3COOH (Ka=1.8×10-5) is titrated with 0.40 M NaOH. Calculate the pH after the addition of 31.0mL of NaOH.
Part A: Calculate the pH of 0.61 M NH3 (Kb=1.8×10−5). Part B: Calculate the concentrations of all species present in 0.61 M NH3 (Kb=1.8×10−5).
Calculate the pH for 100. mL of a 0.500 M solution of ammonia, (NH3 Kb=1.8x10-5) being titrated with 0.500 M HCl at the following positions in the titration. i) The initial pH (before any HCl has been added). A. 9.44 B. 10.81 C. 11.48 D. 12.00 E. 11.75