Calculate the pH at 25°C of 220.0 mL of a buffer solution that is 0.350 M NH4Cl and 0.350 M NH3 before and after the addition of 2.40 mL of 6.0 M HNO3. (The pKa for NH4+ = 9.75)
Calculate the pH at 25°C of 220.0 mL of a buffer solution that is 0.350 M...
Calculate the pH at 25°C of 189.0 mL of a buffer solution that is 0.420 M NH4Cl and 0.420 M NH3 before and after the addition of 2.80 mL of 6.0 M HNO3. (The pKa for NH4+ = 9.75) pH before= pH after=
Calculate the pH at 25°C of 246.0 mL of a buffer solution that is 0.450 M NH4Cl and 0.450 M NH3 before and after the addition of 1.90 mL of 6.0 M HNO3. (The pKa for NH4+ = 9.75) Part 1: pH before= Part 2: pH after=
Calculate the concentration of buffer components present in 177.00 mL of a buffer solution that contains 0.350 M NH4Cl and 0.350 M NH3 immediately after the addition of 1.30 mL of 6.00 M HNO3. Part 1: [NH3]= Part 2: [NH4+]
Calculate the concentration of buffer components in a 207 ml of a buffer solution that is .490 m NH4CL and .490 m NH3 after the addition of 1.4 ml of 6.0 m HNO3 NH3 = M NH4+=M
Calculate the concentration of buffer components present in 254.00 mL of a buffer solution that contains 0.370 M NH4Cl and 0.370 M NH3 immediately after the addition of 1.20 mL of 6.0 M HNO3. [NH3] = ____ M [NH4+] = ____M
Calculate the pH of 100.0 mL of a buffer that is 0.0600 M NH4Cl and 0.185 M NH3 before and after the addition of 1.00 mL of 5.65 M HNO3.
A buffer solution is prepared by placing a 25.00 mL aliquot of 0.165 M NH3 and a 25.00 mL aliquot of 0.150 M NH4Cl into a 100.00 mL volumetric flask and diluting to the mark. Using activities, calculate the pH of the buffer solution. Use the Davies equation to determine activity coefficients. (pKa of NH4+ = 9.245)
A buffer solution contains NH3 0.20 M and NH4 + 0.30 M. Calculate the pH after 2.0 mmol of HCl is added to that solution. The volume of the solution is 50.0 mL and pKa (NH4 +) = 9.25 A 4.89 B. 8.92 C. 9.02 D. 9.07 E 9.58
Calculate the concentration of buffer components present in 165.00 mL of a buffer solution that contains 0.380 M NH4Cl and 0.380 M NH3 immediately after the addition of 3.00 mL of 6.00 M HNO3 (explain all steps)
6. (a) Calculate the pH of the 0.39 M NH3/ 0.73 M NH4Cl buffer system. pH = (b) What is the pH after the addition of 20.0 mL of 0.075 M NaOH to 80.0 mL of the buffer solution? pH =