Homework Answers
7. A.To the right as ka(HF) > Ka(C6H5COOH)
8. A. as only NH3 and Na2O yields basic solution when dissolved in water
9. pOH = -log[H+] = -log (6.7*10^-2) = 1.173
pH = 14- pOH = 12.83 (A)
10.
So,answer
is C
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Predict the direction in which the equilibrium will lie for the following reaction: C_6H_5COO^- + HF...
Solubility Product A student determines that the concentration of OH" ions in a saturated solution of...
Solubility Product A student determines that the concentration of OH" ions in a saturated solution of calcium hydroxide, Ca(OH)2 is 0.054 M. What is Ksp for Ca(OH)2? Ca 7.9 x 10-5 Ob.5.4 x 10-3 Oc. 1.6 x 10-7 Od. 2.9x 10-3 Freezing Point Depression Which colligative property of solutions listed below is correctly stated. 1. The freezing point of a solution decreases as more solute is added. II. The boiling point of a solution increases as more solute is added....
In which set are both compounds soluble is water? (A) magnesium (MgCI_2) and octane (C_6H_18) (B)...
In which set are both compounds soluble is water? (A) magnesium (MgCI_2) and octane (C_6H_18) (B) ethanol (CH_2CH_2OH) and propane (CH-3CH_2CH_3) (C) carbon tetrachloride (CCI_4) and magnesium chloride (MgCI_2) (D) magnesium chloride (MgCI_2) and ethanol (CH_2CH_2OH) When potassium chloride, KCI dissolves in water, which of these diagram would best what you would expect to find in solution? Which is a precipitation reaction? (A) 2Cr(s) + 6HNO_3(aq) rightarrow 2Cr(NO_3)_3(aq) + 3H_2(g) (B) H_3PO_4(aq) + 3KOH(aq) rightarrow K_3PO_4(aq) + 3H_2O(l)) (C) 3Ba(NO_3)_2(aq)...
Q 21: Which of the following is the strongest acid? A) HF (K, for HF is...
Q 21: Which of the following is the strongest acid? A) HF (K, for HF is 7.2 x 10-4) B) HCN (K for HCN is 4.9 x 10-10) C) HCNO (K for HCNO is 2 x 10-4) D) H3B03 (K, for H3B03 is 5.4 x 10-10) OA B с D Question 22 (2.439024 points) We were unable to transcribe this imageQuestion 23 (2.439024 points) Q 23: Which of the following is the weakest acid? A) HF (K, for HF is...
1. (a) Balance the following half-reactions by the ion-electron half-reaction method: (i) (acid solution) NO2(g) →...
1. (a) Balance the following half-reactions by the ion-electron half-reaction method: (i) (acid solution) NO2(g) → NO,- (aq) (ii) (acid solution) H SeO(aq) → Se (s) (iii) (base solution) P (8) PH, (g) (iv) (base solution) Co(OH)(s) C002 () (b) Which of the above equations are oxidation half-reactions? (c) Give the formulas of the reactants that become oxidized in the course of the reaction.
question 2 and 3 could be answer is a complete question Part 2. (3pt) If we pump HF gas into the buffer solution in Part 1 (without changing the solution volume), which of the following stateme...
question 2 and 3 could be answer is a complete question
Part 2. (3pt) If we pump HF gas into the buffer solution in Part 1 (without changing the solution volume), which of the following statement should be true? Statement (I): The concentration of fluoride ion F will decrease. Statement (Il): The pH of the buffer will decrease. Statement (IIl): The concentration of H30* will decrease. a) (0) b) (l) c) (IlI) d)(0) and () e) (0) and (II) f...
QUESTION 1 Which of the following solutions is a buffer? A mixture of HF and HBr A...
QUESTION 1 Which of the following solutions is a buffer? A mixture of HF and HBr A mixture of H2SO4 and Na2SO4 A mixture of NaI and HI A mixture of NaF and HF 1 points QUESTION 2 What is the [A-]/[HA] ratio in a buffer made of HA and its conjugate base, A-, and has a pH of 8.00 ? The pKa of HA is 6.00 1:1 1:10 1:100 10:1 100:1 1 points QUESTION 3 If the molar...
5. Which of the following species is amphiprotic in aqueous solution? (a) CH3NH2 c) NH4 (e)...
5. Which of the following species is amphiprotic in aqueous solution? (a) CH3NH2 c) NH4 (e) HSO (d) F (b) Н:0" 6, Use Table 15.2 (page 529) to decide whether the species on the left or those on the right are favored by the reaction. a. NH4 (aq) + H2PO4" (aq) # NH3(aq) + HsPO b. HCN (aq) + HS(aq) CN" (aq) +H2S c. HCO +OH CO2 H2S d. Al(H20)6 3+ +OH = Al(H20) s2+ OH 7. The equilibrium constant...
equilibrium help!! What is the equilibrium constant for the reaction CO(g) + 3 H2(g) - CH4(g)...
equilibrium help!!
What is the equilibrium constant for the reaction CO(g) + 3 H2(g) - CH4(g) + H2O(g) if at 20 °C the equilibrium molar concentrations are [CO] -0.613, [H2] = 1.839, (CH4) = 0.387, and [H20) - 0.387? Format Β Ι Ο The reaction for the formation of the diamine-silver ion is as follows: Ag (aq) + 2NH3(aq) + Ag(NH3)2(aq) a. Write the equilibrium constant expression for this reaction. for the above b. An experiment was carried out to...
1. Which of the followi ch of the following reactions is not readily explained by the...
1. Which of the followi ch of the following reactions is not readily explained by the Arrhenius concept of acids and bases? a. A. HCl(aq) + NaOH(aq) - NaCl(aq) + H20() b. H30(aq) + OH-(aq) + 2H20(1) c. HCI(g) + NH3(g) - NH4Cl(s) d. HC2H302(aq) + H2O(l) H30*(aq) + C2H302-(ag) e. H30 (aq) + OH-(aq) + 2H2O(aq) 2. Classify each of the following species as Brønsted acid or base or both: a) H20, b) OH", c) H30, d) NH3, e)...
1. Which of the followi ch of the following reactions is not readily explained by the Arrhenius concept of acids a...
1. Which of the followi ch of the following reactions is not readily explained by the Arrhenius concept of acids and bases? a. A. HCl(aq) + NaOH(aq) - NaCl(aq) + H20() b. H30(aq) + OH-(aq) + 2H20(1) c. HCI(g) + NH3(g) - NH4Cl(s) d. HC2H302(aq) + H2O(l) H30*(aq) + C2H302-(ag) e. H30 (aq) + OH-(aq) + 2H2O(aq) 2. Classify each of the following species as Brønsted acid or base or both: a) H20, b) OH", c) H30, d) NH3, e)...
Solubility Product A student determines that the concentration of OH" ions in a saturated solution of calcium hydroxide, Ca(OH)2 is 0.054 M. What is Ksp for Ca(OH)2? Ca 7.9 x 10-5 Ob.5.4 x 10-3 Oc. 1.6 x 10-7 Od. 2.9x 10-3 Freezing Point Depression Which colligative property of solutions listed below is correctly stated. 1. The freezing point of a solution decreases as more solute is added. II. The boiling point of a solution increases as more solute is added....
In which set are both compounds soluble is water? (A) magnesium (MgCI_2) and octane (C_6H_18) (B) ethanol (CH_2CH_2OH) and propane (CH-3CH_2CH_3) (C) carbon tetrachloride (CCI_4) and magnesium chloride (MgCI_2) (D) magnesium chloride (MgCI_2) and ethanol (CH_2CH_2OH) When potassium chloride, KCI dissolves in water, which of these diagram would best what you would expect to find in solution? Which is a precipitation reaction? (A) 2Cr(s) + 6HNO_3(aq) rightarrow 2Cr(NO_3)_3(aq) + 3H_2(g) (B) H_3PO_4(aq) + 3KOH(aq) rightarrow K_3PO_4(aq) + 3H_2O(l)) (C) 3Ba(NO_3)_2(aq)...
Q 21: Which of the following is the strongest acid? A) HF (K, for HF is 7.2 x 10-4) B) HCN (K for HCN is 4.9 x 10-10) C) HCNO (K for HCNO is 2 x 10-4) D) H3B03 (K, for H3B03 is 5.4 x 10-10) OA B с D Question 22 (2.439024 points) We were unable to transcribe this imageQuestion 23 (2.439024 points) Q 23: Which of the following is the weakest acid? A) HF (K, for HF is...
1. (a) Balance the following half-reactions by the ion-electron half-reaction method: (i) (acid solution) NO2(g) → NO,- (aq) (ii) (acid solution) H SeO(aq) → Se (s) (iii) (base solution) P (8) PH, (g) (iv) (base solution) Co(OH)(s) C002 () (b) Which of the above equations are oxidation half-reactions? (c) Give the formulas of the reactants that become oxidized in the course of the reaction.
question 2 and 3 could be answer is a complete question
Part 2. (3pt) If we pump HF gas into the buffer solution in Part 1 (without changing the solution volume), which of the following statement should be true? Statement (I): The concentration of fluoride ion F will decrease. Statement (Il): The pH of the buffer will decrease. Statement (IIl): The concentration of H30* will decrease. a) (0) b) (l) c) (IlI) d)(0) and () e) (0) and (II) f...
5. Which of the following species is amphiprotic in aqueous solution? (a) CH3NH2 c) NH4 (e) HSO (d) F (b) Н:0" 6, Use Table 15.2 (page 529) to decide whether the species on the left or those on the right are favored by the reaction. a. NH4 (aq) + H2PO4" (aq) # NH3(aq) + HsPO b. HCN (aq) + HS(aq) CN" (aq) +H2S c. HCO +OH CO2 H2S d. Al(H20)6 3+ +OH = Al(H20) s2+ OH 7. The equilibrium constant...
equilibrium help!!
What is the equilibrium constant for the reaction CO(g) + 3 H2(g) - CH4(g) + H2O(g) if at 20 °C the equilibrium molar concentrations are [CO] -0.613, [H2] = 1.839, (CH4) = 0.387, and [H20) - 0.387? Format Β Ι Ο The reaction for the formation of the diamine-silver ion is as follows: Ag (aq) + 2NH3(aq) + Ag(NH3)2(aq) a. Write the equilibrium constant expression for this reaction. for the above b. An experiment was carried out to...
1. Which of the followi ch of the following reactions is not readily explained by the Arrhenius concept of acids and bases? a. A. HCl(aq) + NaOH(aq) - NaCl(aq) + H20() b. H30(aq) + OH-(aq) + 2H20(1) c. HCI(g) + NH3(g) - NH4Cl(s) d. HC2H302(aq) + H2O(l) H30*(aq) + C2H302-(ag) e. H30 (aq) + OH-(aq) + 2H2O(aq) 2. Classify each of the following species as Brønsted acid or base or both: a) H20, b) OH", c) H30, d) NH3, e)...
1. Which of the followi ch of the following reactions is not readily explained by the Arrhenius concept of acids and bases? a. A. HCl(aq) + NaOH(aq) - NaCl(aq) + H20() b. H30(aq) + OH-(aq) + 2H20(1) c. HCI(g) + NH3(g) - NH4Cl(s) d. HC2H302(aq) + H2O(l) H30*(aq) + C2H302-(ag) e. H30 (aq) + OH-(aq) + 2H2O(aq) 2. Classify each of the following species as Brønsted acid or base or both: a) H20, b) OH", c) H30, d) NH3, e)...
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