Write the equations that explain the following: 1 Kw 2 Ksp for HgS 3 Ka for...
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Write the equations that explain the following:
1 Kw
2 Ksp for HgS
3 Ka for...
2. Is Kw the same thing as Ka? Explain. 5. Calculate the pH of a buffer...
2. Is Kw the same thing as Ka? Explain. 5. Calculate the pH of a buffer composed of 0.100 M acetic acid (CH3COOH) and 0.600 M acetate (CH3COO') knowing that the acid dissociation constant Ka is 1.80 x 105
Equations pH=-log[H3O+]; pOH= -log[OH]; pKw=14.00=pH+POH; Ka-[H3O+][A-[HA]; Kb=[BH+][OH-)[B); pKa=-log Ka; Ka. Kb=Kw Constants Ka (HS-)=1x10-19; Ka (HF)...
Equations pH=-log[H3O+]; pOH= -log[OH]; pKw=14.00=pH+POH; Ka-[H3O+][A-[HA]; Kb=[BH+][OH-)[B); pKa=-log Ka; Ka. Kb=Kw Constants Ka (HS-)=1x10-19; Ka (HF) 7.2x10-4; Ka ([Al(H20).]+)7.9x10-6; Ka (H3PO4)=7.5x10-2: Ka (HPO42-) =3.6x10-13; Ka (HCI)=Huge; Ka(Na+)=tiny; Ka(Cl-)tiny; Kb(NH3)=1.8x10-5; Kw=1x10-14 1) Calculate the pH of aqueous 0.25M HCl and 0.25M HF solutions. 2) Complete the following tables for aqueous solutions of conjugate acid-base pKa pKb Kb 1.3x10-4 35 3) Complete the following table for aqueous solutions DHL TH+) OH) pOH 1x102 4) Calculate the pH of aqueous 0.15M Ba(OH)2 and...
Given the following information: formic acid HCOOH Ka = 1.8×10-4 triethylamine (C2H5)3N Kb =...
Given the following information: formic acid HCOOH Ka = 1.8×10-4 triethylamine (C2H5)3N Kb = 5.2×10-4 (1) Write the net ionic equation for the reaction that occurs when equal volumes of 0.167 Maqueous formic acid and triethylamine are mixed. It is not necessary to include states such as (aq) or (s). Use HCOO- as the formula for the formate ion. -reactant or product favored? -pH is >, <, = to 7?
please explain the steps please 5. Determine the Ky for CN at 25°C. The K, for...
please explain the steps please
5. Determine the Ky for CN at 25°C. The K, for HCN is 4.9 x 10-10. 6. Determine the Ka of an acid whose 0.294 M solution has a pH of 2.80. 7. Determine the acid dissociation constant for a 0.020 M formic acid solution that has a pH of 2.74. Formic acid is a weak monoprotic acid and the equilibrium equation of interest is HCOOH(aq) + H20(1) =H30+(aq) + HCO2-(aq).
1. What is the pOH of 2.9 × 10-7 M KOH? 2. Formic acid (HCOOH) undergoes...
1. What is the pOH of 2.9 ×
10-7 M KOH?
2. Formic acid (HCOOH) undergoes the following dissociation
reaction:
HCOOH ⟷
H+ + HCOO- Ka = 1.8 ×
10-4
What would be the Kb value of its conjugate base?
1. What is the pOH of an aqueous solution of 0.171 M hydrobromic acid? pOH =...
1. What is the pOH of an aqueous solution of 0.171 M hydrobromic acid? pOH = 2. What is the pH of an aqueous solution of 1.77×10-2 M nitric acid? pH = 3. What is the pOH of an aqueous solution of 3.08×10-2 M potassium hydroxide? pOH = 4. What is the pH of an aqueous solution of 3.08×10-2 M potassium hydroxide? pH = 5. Calculate the pH of a 0.409 M aqueous solution of nitrous acid (HNO2, Ka =...
What is the most likely identity of the species undergoing titration? a) hydrobromic acid (HBr); Ka...
What is the most likely identity of the species undergoing
titration?
a) hydrobromic acid (HBr); Ka = 1.08 x 109
b) acetic acid (CH3CO2H); Ka = 1.8 x 10-5
c) ammonia (NH3); Kb = 1.8 x 10-5
d) sodium acetate (NaC2H3O2); Kb = 5.6 x 10-10
13 12 10 8 pH 7- 4 2 10 30 50 70 90 110
please show all work neatly 5. (2 pts) Consider the following acids and their dissociation constants HPO4-2(aq) + H2O.. H3O"(aq) + PO4-3(aq) Ka-2.2x 10.13 HCOOH(aq) H20 H3O (a) HCOO (aq) Ka =...
please show all work neatly
5. (2 pts) Consider the following acids and their dissociation constants HPO4-2(aq) + H2O.. H3O"(aq) + PO4-3(aq) Ka-2.2x 10.13 HCOOH(aq) H20 H3O (a) HCOO (aq) Ka = 1.8x10-4 a. Which is the weaker acid, HPO42 or HCOOH? b. What is the conjugate base of, HPO42 or c. Which acid has the weaker conjugate base? d. Which acid produces more ions? 6. (2 pts) Write a balanced equation for the neutralization of H3PO4(aq) and NaOH(aq) (3...
CHM2046L: General Chemistry and Oualitative Analysis II; Fall 2019 Equilibrium: Determination of Acid Ionization Constant (Ka)...
CHM2046L: General Chemistry and Oualitative Analysis II; Fall 2019 Equilibrium: Determination of Acid Ionization Constant (Ka) of a Weak Acid) (Post-lab # 8: Due Thursday 10-31", 2019) Last name First Name 1. Determine the pH of a 0.023 M HNO3 solution. 2. Calculate the concentration of H30 in a solution that contains 5.5 x 10-5 MOH at 25°C. Identify the solution as acidic, basic, or neutral. 3. Determine the [H30°) in a 0.265 M HCIO solution. The K, of HCIO...
2. Predict the plausible products of the following reactions and write balanced equations for their formation. Use the s...
2. Predict the plausible
products of the following reactions and write balanced equations
for their formation. Use the stoichiometry as indicated for the
left side of the reaction.Draw the geometric structures of the
products.
Predict the plausible products of the following reactions and write balanced equations for their formation. Use the stoichiometry as indicated for the left side of the reaction. Draw the geometric structures of the products c. [Pd(CN) CN? d. WCl63Br e. Co2(CO)s+ CHI- f. Ni(CO)4 +2PPh3
Predict...
2. Is Kw the same thing as Ka? Explain. 5. Calculate the pH of a buffer composed of 0.100 M acetic acid (CH3COOH) and 0.600 M acetate (CH3COO') knowing that the acid dissociation constant Ka is 1.80 x 105
Equations pH=-log[H3O+]; pOH= -log[OH]; pKw=14.00=pH+POH; Ka-[H3O+][A-[HA]; Kb=[BH+][OH-)[B); pKa=-log Ka; Ka. Kb=Kw Constants Ka (HS-)=1x10-19; Ka (HF) 7.2x10-4; Ka ([Al(H20).]+)7.9x10-6; Ka (H3PO4)=7.5x10-2: Ka (HPO42-) =3.6x10-13; Ka (HCI)=Huge; Ka(Na+)=tiny; Ka(Cl-)tiny; Kb(NH3)=1.8x10-5; Kw=1x10-14 1) Calculate the pH of aqueous 0.25M HCl and 0.25M HF solutions. 2) Complete the following tables for aqueous solutions of conjugate acid-base pKa pKb Kb 1.3x10-4 35 3) Complete the following table for aqueous solutions DHL TH+) OH) pOH 1x102 4) Calculate the pH of aqueous 0.15M Ba(OH)2 and...
please explain the steps please
5. Determine the Ky for CN at 25°C. The K, for HCN is 4.9 x 10-10. 6. Determine the Ka of an acid whose 0.294 M solution has a pH of 2.80. 7. Determine the acid dissociation constant for a 0.020 M formic acid solution that has a pH of 2.74. Formic acid is a weak monoprotic acid and the equilibrium equation of interest is HCOOH(aq) + H20(1) =H30+(aq) + HCO2-(aq).
1. What is the pOH of 2.9 ×
10-7 M KOH?
2. Formic acid (HCOOH) undergoes the following dissociation
reaction:
HCOOH ⟷
H+ + HCOO- Ka = 1.8 ×
10-4
What would be the Kb value of its conjugate base?
What is the most likely identity of the species undergoing
titration?
a) hydrobromic acid (HBr); Ka = 1.08 x 109
b) acetic acid (CH3CO2H); Ka = 1.8 x 10-5
c) ammonia (NH3); Kb = 1.8 x 10-5
d) sodium acetate (NaC2H3O2); Kb = 5.6 x 10-10
13 12 10 8 pH 7- 4 2 10 30 50 70 90 110
please show all work neatly
5. (2 pts) Consider the following acids and their dissociation constants HPO4-2(aq) + H2O.. H3O"(aq) + PO4-3(aq) Ka-2.2x 10.13 HCOOH(aq) H20 H3O (a) HCOO (aq) Ka = 1.8x10-4 a. Which is the weaker acid, HPO42 or HCOOH? b. What is the conjugate base of, HPO42 or c. Which acid has the weaker conjugate base? d. Which acid produces more ions? 6. (2 pts) Write a balanced equation for the neutralization of H3PO4(aq) and NaOH(aq) (3...
CHM2046L: General Chemistry and Oualitative Analysis II; Fall 2019 Equilibrium: Determination of Acid Ionization Constant (Ka) of a Weak Acid) (Post-lab # 8: Due Thursday 10-31", 2019) Last name First Name 1. Determine the pH of a 0.023 M HNO3 solution. 2. Calculate the concentration of H30 in a solution that contains 5.5 x 10-5 MOH at 25°C. Identify the solution as acidic, basic, or neutral. 3. Determine the [H30°) in a 0.265 M HCIO solution. The K, of HCIO...
2. Predict the plausible
products of the following reactions and write balanced equations
for their formation. Use the stoichiometry as indicated for the
left side of the reaction.Draw the geometric structures of the
products.
Predict the plausible products of the following reactions and write balanced equations for their formation. Use the stoichiometry as indicated for the left side of the reaction. Draw the geometric structures of the products c. [Pd(CN) CN? d. WCl63Br e. Co2(CO)s+ CHI- f. Ni(CO)4 +2PPh3
Predict...
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