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What is the pH of a sample of river water in which (HCO3-) = 2.0 x...
Please show all work a) (7.5 points) Calculate the pH of a sample of river water...
Please show all
work
a) (7.5 points) Calculate the pH of a sample of river water in which [HCO, is 1.4 x 104M and the concentration of dissolved CO2 (which is maintained constant by equilibration with atmospheric CO2) is 14x 103M. (pKa for the Co,/Hco, Ico,2" system is 6.37.)
Q1. What is the Molar Solubility (concentration, M) of Pbal, in pure water. Remember that its...
Q1. What is the Molar Solubility (concentration, M) of Pbal, in pure water. Remember that its Kp = 1.17 X 10% PbCl2(aq)=Pb2+ (aq) + 2Cl - (aq) Group of answer choices c 1.43 X 102 M 1.21 X 100 M c 7.19 X 10 M 1.50 M Q2. The technique of separating two or more ions from a solution by adding a reactant that precipitates first one ion, then another and so for, is named Group of answer choices c...
Need help on questions 1-3 Henderson-Hasselbalch: pH=pka + Log( [base]/(acid] ) 1. The value of Ka...
Need help on questions 1-3
Henderson-Hasselbalch: pH=pka + Log( [base]/(acid] ) 1. The value of Ka of nitrous acid (HNO2) is 4.6 x 104 M. Calculate the pH and the concentration of [H3O+] in a 0.02M aqueous solution of HNO2(aq). 2. Label conjugate acid-base pairs: HNO2(aq) + H2O → H30* + NO2 (aq) 3. What will happen to the reaction equilibrium if we increase the pressure in the reaction vessel? H2(g) + 12(e) → 2 HI(g)
1a.) From water sample, 10 mg/L HCO3- as CaCO3, 10 mg/L CO3- as CaCO3 and 50...
1a.) From water sample, 10 mg/L HCO3- as CaCO3, 10 mg/L CO3- as CaCO3 and 50 mg/L Ca+ as CaCO3 were measured. pH was near neutral. What is alkalinity? _____ mg/L as CaCO3 1b.) From water sample, 10 mg/L HCO3- as CaCO3, 10 mg/L CO3- as CaCO3 and 50 mg/L Ca+ as CaCO3 were measured. pH was near neutral. What is alkalinity? _____ mg/L as CaCO3 1c.) Calculate Ksp = _____ A2BO3 ->2A++ BO32- Molar concentration of A+ = Molar...
1. Calculate the concentration of H3O+ for an aqueous solution with a pH of 1.2 A)...
1. Calculate the concentration of H3O+ for an aqueous solution with a pH of 1.2 A) 6.3 x 10-7M B ) 1.6 x 108 M. C) 1.0 x 10-14 M. D) 6.20 x 10-2 M E) 4.0 x 10-4M 2. Calculate the concentration of OH- for an aqueous solution with a pH of 13.8. A) 0.64 M B) 4.0 x 10-5M C) 1.5 x 10-5M D) 1.0 x 10-14 M E) 2.5 x 10-10 M 3. Which of the following...
please show all work for part III :) all the information needed is in the pictures...
please show all work for part III :) all the information
needed is in the pictures
III. Preparing HC,HO, Solutions and Determining pH only cal. One! theoretical pH 1.0 x 10-14 (181) concentration of HC,H,O, M measured pH ya ? 3.06 1.0 x 10-2 ka: 1. 8x10°3 ixio- 3.43 1.0 x 10-3 x = CH) -1,34% 103n 3.87 1.0 x 107 PM - 04 TH11 4.30 concentration of HC,H,O, M calculated K of HC H302 based on pH data literature...
In waters affected by acid rain the concentrations of the three carbonic acid species (H2CO3, HCO3-,...
In waters affected by acid rain the concentrations of the three carbonic acid species (H2CO3, HCO3-, CO32-) are determined by concentration of the strong acid deposited by acid rain, as well as the concentration of H2CO3 which is controlled by the solubility of carbon dioxide . Under these conditions (constant H2CO3 and relatively low pH) the only carbonic acid equilbrium of importance is the conjugate base reaction of HCO3-, which is related to, but not identical to - and not...
A groundwater sample obtained near a septic tank has a pH of 6.90 and HCO3- concentration...
A groundwater sample obtained near a septic tank has a pH of 6.90 and HCO3- concentration of 8.25 mmol L-1. The source of bicarbonate is from the carbon dioxide produced from microbes and the process can be presented as the following chemical equation. CO2 (g) + 2H2O (l) ⇌ HCO3- (aq) + H3O+ (aq) Ka = 4.5x10-7 Provided with a Henry’s constant of CO2 as 0.034 M/atm, answer the following questions. Use an ICE table and work backward to determine...
(8 pts) Carbon dioxide in the atmosphere dissolves in water to establish an equilibrium that can...
(8 pts) Carbon dioxide in the atmosphere dissolves in water to establish an equilibrium that can increase the acidity of aqueous solutions in the environment. This equilibrium is CO2(g) = CO2 (aq), Kn= 3.1 x 10-2 at 25°C. Kh is called the Henry's law constant, which relates the solubility of the gas CO2 in the aqueous solution, [CO2), to the partial pressure of CO2 over the solution, p(CO2): [CO2] (M)= Kn · p(CO2) (atm) During the preceding decades, the atmospheric...
1. An equilibrium mixture of CH.COH and CHCO,has a pH of 4.8. The equino equation is...
1. An equilibrium mixture of CH.COH and CHCO,has a pH of 4.8. The equino equation is given below: CH3CO.H (aq) + H20 (1) = CH,CO2 (aq) + HO* (aq) Answer the following questions when the pH of the solution is adjusted to 2.8. 4. What happens to the concentration of H3O+ (aq) when pH changes from 4.8 to 2.87 b. In which direction does the equilibrium shift in the equation? c. What happens to the concentration of CH,CO2H (aq) when...
Please show all
work
a) (7.5 points) Calculate the pH of a sample of river water in which [HCO, is 1.4 x 104M and the concentration of dissolved CO2 (which is maintained constant by equilibration with atmospheric CO2) is 14x 103M. (pKa for the Co,/Hco, Ico,2" system is 6.37.)
Q1. What is the Molar Solubility (concentration, M) of Pbal, in pure water. Remember that its Kp = 1.17 X 10% PbCl2(aq)=Pb2+ (aq) + 2Cl - (aq) Group of answer choices c 1.43 X 102 M 1.21 X 100 M c 7.19 X 10 M 1.50 M Q2. The technique of separating two or more ions from a solution by adding a reactant that precipitates first one ion, then another and so for, is named Group of answer choices c...
Need help on questions 1-3
Henderson-Hasselbalch: pH=pka + Log( [base]/(acid] ) 1. The value of Ka of nitrous acid (HNO2) is 4.6 x 104 M. Calculate the pH and the concentration of [H3O+] in a 0.02M aqueous solution of HNO2(aq). 2. Label conjugate acid-base pairs: HNO2(aq) + H2O → H30* + NO2 (aq) 3. What will happen to the reaction equilibrium if we increase the pressure in the reaction vessel? H2(g) + 12(e) → 2 HI(g)
1. Calculate the concentration of H3O+ for an aqueous solution with a pH of 1.2 A) 6.3 x 10-7M B ) 1.6 x 108 M. C) 1.0 x 10-14 M. D) 6.20 x 10-2 M E) 4.0 x 10-4M 2. Calculate the concentration of OH- for an aqueous solution with a pH of 13.8. A) 0.64 M B) 4.0 x 10-5M C) 1.5 x 10-5M D) 1.0 x 10-14 M E) 2.5 x 10-10 M 3. Which of the following...
please show all work for part III :) all the information
needed is in the pictures
III. Preparing HC,HO, Solutions and Determining pH only cal. One! theoretical pH 1.0 x 10-14 (181) concentration of HC,H,O, M measured pH ya ? 3.06 1.0 x 10-2 ka: 1. 8x10°3 ixio- 3.43 1.0 x 10-3 x = CH) -1,34% 103n 3.87 1.0 x 107 PM - 04 TH11 4.30 concentration of HC,H,O, M calculated K of HC H302 based on pH data literature...
(8 pts) Carbon dioxide in the atmosphere dissolves in water to establish an equilibrium that can increase the acidity of aqueous solutions in the environment. This equilibrium is CO2(g) = CO2 (aq), Kn= 3.1 x 10-2 at 25°C. Kh is called the Henry's law constant, which relates the solubility of the gas CO2 in the aqueous solution, [CO2), to the partial pressure of CO2 over the solution, p(CO2): [CO2] (M)= Kn · p(CO2) (atm) During the preceding decades, the atmospheric...
1. An equilibrium mixture of CH.COH and CHCO,has a pH of 4.8. The equino equation is given below: CH3CO.H (aq) + H20 (1) = CH,CO2 (aq) + HO* (aq) Answer the following questions when the pH of the solution is adjusted to 2.8. 4. What happens to the concentration of H3O+ (aq) when pH changes from 4.8 to 2.87 b. In which direction does the equilibrium shift in the equation? c. What happens to the concentration of CH,CO2H (aq) when...
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