5. Calculate the pH of the following solutions. (4 pts) a) 0.25 M NH4Cl solution b)...
5. Calculate the pH of the following solutions. (4 pts) 0S18 500257 a) 0.25 M NHCI solution b) 0.10 M NaHCO3 solution 6. b) A student mixes 8.203 g of NaC2H3O2 with 100 mL of 1.0 M HC2H3O2, what is the pH of the buffer? (4 pts) b) If you add 5.0 mL of 0.5 M NaOH solution to 20.0 mL to the buffer above, what is the pH of the resulting solution? (4 pts)
Calculate the pH of 0.25 M NH4CL given kb= 1.76x10^-5 for NH3 (ans. 4.92)
pH LI Calculate the pH of the following solutions: Solution (a) 0.10 M CH3COOH 12.9 (b) 0.10 M NH3 Mixture of 25.00 mL of 0.10 M HCl + 25.00 mL of 0.10 NaOH Mixture of 20.00 mL of 0.10 M NaOH + 20.00 mL of 0.10 M CHCOOH (e) Mixture of 20,00 mL of 0.10 M HCI + 20.00 mL of 0.10 M NH; Saturated Mg(OH)2 (s) aqueous solution if water's dissociation is negligible K[CH3COOH) = 1.8x10-Kb [NH:] = 1.8*10-9;...
a) Calculate the pH of a buffer that is 0.20 M NH3 and 0.20 M NH4Cl Correct? b) Calculate the pH after addition of 10 mL 0.10 M HCl to 65 mL of the buffer? c) Calculate the pH after addition of 5 mL of 1.0 M LiOH to 200 mL of the buffer?
calculate the pH of each of the following solutions: a. NaCH3C02 0.63M b. NH4Cl 0.19M c. AlCl3 0.055M d. KCN 0.65M
What is the pH of a 0.10 M NH4Cl solution? (Kb(NH3) = 1.8 x 10-5 A. 7.25 B. 11.3 C. 5.63 D. 3.40 E. 10.6
Construct log(C) vs. pH diagrams for the following two acid-base systems: 0.20 M NH4Cl, 0.10 M H2CO3 List the pH & concentration of ALL species in the following solutions: (a) 0.10 M HNaCO3 (b) 0.10 M Na2CO3 (c) 0.10 M H2CO3 (d) 0.20 M NH4Cl (d) 0.20 M NH3 (e) 0.10 (NH4)2CO3
A) Calculate the pH of the following simple solutions: 0.08 M HCl 0.25 M KOH 0.08 M HCl + 0.25 M KOH Is solution “c” a buffer? Why or why not? B) Suppose you dissolve 0.1 moles of formic acid in 1 water. What are all of the molecules and ions you would expect to find? Which one of the above will be found in the greatest total amount? Which of the above will be found in very small amounts?...
calculate Ka for 0.10 M NH4Cl (pH= 4.86) ?
Calculate the pH change that results when 12 mL of 5.9 M NaOH is added to 760. mL of each the following solutions. (See the appendix.) (b) 0.10 M NH4Cl (c) 0.10 M NH3 (d) a solution that is 0.10 M in each NH4+ and NH3