What is the pH of a solution that results from mixing together
equal volumes of a...
What is the pH of a solution that results from mixing together
equal volumes of a 0.160 M solution of acetic acid and a 0.080 M
solution of sodium hydroxide?
What is the pH of a solution that results from mixing together
equal volumes of a 0.050 M solution of ammonia and a 0.025 M
solution of hydrochloric acid? (pKa of NH4+ = 9.25)
Question 6
Calculate the pH of a solution prepared by mixing equal volumes
of 0.050 M sodium oxalate, Na2C2O4 (aq), and 0.010 M
ammonium chloride, NH4Cl (aq).
For ammonium, Ka = 5.70 × 10–10; for oxalic acid,
Ka,1 = 5.60 × 10–2and Ka,2 = 5.42 × 10–5.
Hint #1: Use the charge balance
equation as your main equation. Use the mass balance and
equilibrium equations to find an expression for each species in
terms of [H3O+] or [OH–], then substitute...
What is the pH of the solution which results from mixing 25mL of
0.2M CH3CO2 and 25ml of 0.20 KOH? ka= CH3CO2H=1.8E-5
additional questions: why do you use 5mmoles rather than 10? Why
do you use kb rather than ka?
answer: 8.87
Thanks!
What is the pH of the solution which results from mixing 35 mL
of 0.50 M NH3(aq) and 35 mL of 0.50 HCI(aq) at 25 degree C? (Kb for
NH3 = 1.8*10^-5). Please show all work. The answer is pH=4.32
PART A)
A solution is prepared by mixing equal volumes of 0.17 M HCl and
0.42 M HNO3. (Assume that volumes are additive.) Express the pH to
two decimal places.
PART B)
Using the chart Estimate [H3O+] in a 1.5 M solution of
each acid.
Express the molar concentrations to two significant figures
separated by commas.
I'm stuck on the one that says very
large. For all the other ones I multiplied the Ka by
the 1.5M. The answer for...
78 A.) Calculate the pH of the solution that results from mixing
20.0 mL of 0.022 M HCN(aq) with 80.0 mL of 0.066 M NaCN(aq).
pH=
b. Calculate the pH of the solution that results from mixing
28.0 mL of 0.117 M HCN(aq) with 28.0 mL of 0.117 M NaCN(aq).
C. Calculate the pH of the solution that results from mixing
66.0 mL of 0.057 MHCN(aq) with 34.0 mL of 0.034 M NaCN(aq).. The Ka
value for HCN is 4.9×10^(−10)...
1. Calculate the pH of a solution that results from mixing 15 mL
of 0.13 M HBrO(aq) with 11 mL of 0.1 M NaBrO(aq). The Ka
value for HBrO is 2 x 10-9.
2. What is the buffer component ratio, (BrO-)/(HBrO)
of a bromate buffer that has a pH of 7.91. Ka of HBrO is
2.3 x 10-9.
Calculate the pH of the solution that results from mixing 61.0mL
of 0.052 MHCN(aq) with 39.0 mL of 0.025 M NaCN(aq).The ?a value for
HCN is 4.9×10−10
pH=
Calculate the pH of the solution that results from mixing 30.0
mL of 0.027 M HCN(aq) with 70.0 mL of 0.064 M NaCN(aq).
pH=
Calculate the pH of the solution that results from mixing 42.0
mL of 0.103 M HCN(aq) with 42.0 mL of 0.103 M NaCN(aq).
pH=
Calculate the pH of the solution that results from mixing 35.0
mL of 0.18 M formic acid and 70.0 mL of 0.090 M sodium hydroxide. (
value for formic acid is 1.8*10-4.)