Homework Answers
3. Ans - E
During dissociation of strong acid , recation will moves toward right due to formation of H+ ions .
HCl ---> H+(Aq). + Cl - ( Aq)
4. Answer - B
When H+ is removed from acid treated as conjugate base.
H2SO4 ----> HSO4-. +. H+
And H2SO4 having acid nature react with base H2O.
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need help with number 3 and 4.
3. Which of the following is not true...
The following equation represents the dissociation of propionic acid in water. HC3H502(aq) + H20(1) = H30+(aq)...
The following equation represents the dissociation of propionic acid in water. HC3H502(aq) + H20(1) = H30+(aq) + C3H502 (aq) The value for the acid-dissociation constant for propionic acid (HC3H502) is 1.3x10-5 at 25°C. Calculate the hydronium ion concentration present in a propionic acid solution that has the following equilibrium concentrations. 3.24x10-2 mol/L HC3H502 3.06x10-4 mol/L for propionic acid's conjugate base, C3H5027 The general form of the acid-dissociation constant is Ka = [H30'A ], where Ka is the acid-dissociation constant, [HA]...
9) Which one of the following pairs cannot be mixed together to form a buffer solutions...
9) Which one of the following pairs cannot be mixed together to form a buffer solutions A) KOH, HNO2 B) H2S03. KHSO3 C) HONH2, HONH3CI D) NaCI, HCI E) RbOH, HF 10) The Henderson-Hasselbalch equation is acid) acid] A) pH- pKa log basel base] D) pH - pKaobase [acid 11) HA is a weak acid. Which equilibrium corresponds to the equilibrium constant Kp for A- A) A (aq) H30+ (aq) HA (aq) H20 0) B) HA (aq) + OH-(aq) 근...
Q(7) The reaction system POBr3(g) - POBr(g) + Brz(g) is at equilibrium. Which of the following statements describes...
Q(7) The reaction system POBr3(g) - POBr(g) + Brz(g) is at equilibrium. Which of the following statements describes the behavior of the system if POBr is added to the container? A) The reverse reaction will proceed to establish equilibrium. B) The partial pressures of POBra and POBr will remain steady while the partial pressure of bromine increases. C) The partial pressure of chlorine will increase while the partial pressure of POB decreases. D) The partial pressure of chlorine remains steady...
4. Consider the reaction: 2 SO2(g) + O2(g) 3 2 SO:(g) A 2.0 L flask was...
4. Consider the reaction: 2 SO2(g) + O2(g) 3 2 SO:(g) A 2.0 L flask was filled with 0.0400 moles of SO, and 0.0200 moles of O2. At equilibrium 0.0296 moles of SO, were found. What is the equilibrium constant for this reaction? A) 2.556 x 10 B) 3.664 x 10 C) 6.953 x 102 D) 9.964 x 102 E) 3.116 x 10 5. What is a conjugate acid-base pair for the following equilibrium? H2O(l) + HSO4 (aq) = H2SO4(aq)...
1 a) Write the aqueous acid dissociation reactions for an acid and base dissociation reaction for a base according to th...
1 a) Write the aqueous acid dissociation reactions for an acid and base dissociation reaction for a base according to the Bronsted-Lowry definition b) Determine conjugate bases of acids and acids of bases c) Write the equilibrium expression for an acid or a base aqueous dissociation d) Evaluate strength of an acid or base based on its Ka or Kb or pKa or pKb. e) Apply Kw at 25oC and at different temperatures. f) Solve for the pH of strong...
According to the following reaction, which molecule is acting as an acid? H2O + H2SO4 →...
According to the following reaction, which molecule is acting as an acid? H2O + H2SO4 → H30* +HSO4 1. A) H2SO4 2. B) H20 3. C) H30* 4. D) HSO4 2. According to the following reaction, which molecule is acting as a base? H2O + NH3 OH + NH4+ 1. A) H0 2. B) NH3 3. C) OH 4. D) NHÀ For the following reaction, identify whether the water molecule is behaving as H3PO4 +H20 = H2PO4 + H30+ 1....
I need help with all three questions please and thank you! *four 4. Consider the reaction:...
I need help with all three questions please and thank
you!
*four
4. Consider the reaction: 2 SOX) + g) = 2 50 (8) A 2.0 L flask was filled with 0.0400 moles o. 00200 moles of O. At equilibrium 0.0296 moles of so, were found what is the equilibrium constant for this reaction? A) 2.556 x 10 + B) 3.664 x 10 C) 6.953 x 102 D) 9.964 x 102 E) 3.116 x 10 5. What is a conjugate...
in some cases, there may be a mixture of two or more acids. When this happens,...
in some cases, there may be a mixture of two or more acids. When this happens, the stronger acid will dissociate completely, so you should be able to calculate how much H,0 is in solution as a result. Writing out the equation for the dissociation often helps The weak acid will attempt to dissociate and is governed by the equilibrium (K,). You should write out the equation for the weak acid Now-write in the values for the concentrations that you'll...
The following pictures represent solutions that contain a weak acid HA (pka = 5.0) and its...
The following pictures represent solutions that contain a weak acid HA (pka = 5.0) and its potassium salt KA. Unshaded spheres represent H atoms and shaded spheres represent A-ions. (K, H30, OH", and solvent H2O molecules have been omitted for clarity.) -HA -A (3) (1) 12) 12) Which of these solutions are buffers? A) (1) and (2) C) (1), (2) and (3) B) (1) and (3) D) All are buffer solutions The following pictures represent solutions at various stages in...
The following pictures represent solutions that contain a weak acid HA (pka = 5.0) and its...
The following pictures represent solutions that contain a weak acid HA (pka = 5.0) and its potassium salt KA. Unshaded spheres represent H atoms and shaded spheres represent A-ions. (K, H30, OH", and solvent H2O molecules have been omitted for clarity.) -HA -A (1) 12) 12) Which of these solutions are buffers? A) (1) and (2) C) (1), (2) and (3) B) (1) and (3) D) All are buffer solutions The following pictures represent solutions at various stages in the...
The following equation represents the dissociation of propionic acid in water. HC3H502(aq) + H20(1) = H30+(aq) + C3H502 (aq) The value for the acid-dissociation constant for propionic acid (HC3H502) is 1.3x10-5 at 25°C. Calculate the hydronium ion concentration present in a propionic acid solution that has the following equilibrium concentrations. 3.24x10-2 mol/L HC3H502 3.06x10-4 mol/L for propionic acid's conjugate base, C3H5027 The general form of the acid-dissociation constant is Ka = [H30'A ], where Ka is the acid-dissociation constant, [HA]...
9) Which one of the following pairs cannot be mixed together to form a buffer solutions A) KOH, HNO2 B) H2S03. KHSO3 C) HONH2, HONH3CI D) NaCI, HCI E) RbOH, HF 10) The Henderson-Hasselbalch equation is acid) acid] A) pH- pKa log basel base] D) pH - pKaobase [acid 11) HA is a weak acid. Which equilibrium corresponds to the equilibrium constant Kp for A- A) A (aq) H30+ (aq) HA (aq) H20 0) B) HA (aq) + OH-(aq) 근...
Q(7) The reaction system POBr3(g) - POBr(g) + Brz(g) is at equilibrium. Which of the following statements describes the behavior of the system if POBr is added to the container? A) The reverse reaction will proceed to establish equilibrium. B) The partial pressures of POBra and POBr will remain steady while the partial pressure of bromine increases. C) The partial pressure of chlorine will increase while the partial pressure of POB decreases. D) The partial pressure of chlorine remains steady...
4. Consider the reaction: 2 SO2(g) + O2(g) 3 2 SO:(g) A 2.0 L flask was filled with 0.0400 moles of SO, and 0.0200 moles of O2. At equilibrium 0.0296 moles of SO, were found. What is the equilibrium constant for this reaction? A) 2.556 x 10 B) 3.664 x 10 C) 6.953 x 102 D) 9.964 x 102 E) 3.116 x 10 5. What is a conjugate acid-base pair for the following equilibrium? H2O(l) + HSO4 (aq) = H2SO4(aq)...
According to the following reaction, which molecule is acting as an acid? H2O + H2SO4 → H30* +HSO4 1. A) H2SO4 2. B) H20 3. C) H30* 4. D) HSO4 2. According to the following reaction, which molecule is acting as a base? H2O + NH3 OH + NH4+ 1. A) H0 2. B) NH3 3. C) OH 4. D) NHÀ For the following reaction, identify whether the water molecule is behaving as H3PO4 +H20 = H2PO4 + H30+ 1....
I need help with all three questions please and thank
you!
*four
4. Consider the reaction: 2 SOX) + g) = 2 50 (8) A 2.0 L flask was filled with 0.0400 moles o. 00200 moles of O. At equilibrium 0.0296 moles of so, were found what is the equilibrium constant for this reaction? A) 2.556 x 10 + B) 3.664 x 10 C) 6.953 x 102 D) 9.964 x 102 E) 3.116 x 10 5. What is a conjugate...
in some cases, there may be a mixture of two or more acids. When this happens, the stronger acid will dissociate completely, so you should be able to calculate how much H,0 is in solution as a result. Writing out the equation for the dissociation often helps The weak acid will attempt to dissociate and is governed by the equilibrium (K,). You should write out the equation for the weak acid Now-write in the values for the concentrations that you'll...
The following pictures represent solutions that contain a weak acid HA (pka = 5.0) and its potassium salt KA. Unshaded spheres represent H atoms and shaded spheres represent A-ions. (K, H30, OH", and solvent H2O molecules have been omitted for clarity.) -HA -A (3) (1) 12) 12) Which of these solutions are buffers? A) (1) and (2) C) (1), (2) and (3) B) (1) and (3) D) All are buffer solutions The following pictures represent solutions at various stages in...
The following pictures represent solutions that contain a weak acid HA (pka = 5.0) and its potassium salt KA. Unshaded spheres represent H atoms and shaded spheres represent A-ions. (K, H30, OH", and solvent H2O molecules have been omitted for clarity.) -HA -A (1) 12) 12) Which of these solutions are buffers? A) (1) and (2) C) (1), (2) and (3) B) (1) and (3) D) All are buffer solutions The following pictures represent solutions at various stages in the...
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