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7. The point d is the (A) Triple 8. Na-so point. (B) Melting Phase E (C) Critical Phase Phase (D) Boiling (E) Freezing

7. The point d is the (A) Triple 8. Na-so point. (B) Melting Phase E (C) Critical Phase Phase (D) Boiling (E) Freezing

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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2 7. The point d is the point. Phase (A) Triple (B) Melting (C) Critical (D) Boiling (E) Freezing 8. Na₂SO4 is added slowly to a solution that is 0,010 M in Ba, Sr, and Ca. Which compound will precipitate first? Ksp BaSO4: 1.5 x 10", SrSO4: 12.8 x 107, CaSO4: 4.0 x 10-12 (A) BaSO4 (B) SrSO4 (C) CaSO4 (D) All same time (E) None 9. The rate constant for a second-order reaction is 0.13 M¹1s. If the initial concentration of reactant is 0.26 mol/L, it takes (A) 1.0 (B) 4.4 x 103 s for the concentration to decrease to 0.13 mol/L. (C) 0.017 (D) 0.50 (E) 30 10. The final pOH after 27.8 mL of 0.050 M HCl solution is added to 33.8 mL of 0.128 M NaOH is:(A) 2.45 (B) 5.44 (C) 1.32 (D) 1.95 (E) 3.43 11. Calculate the percent dissociation of HF in 1.0 M HF (K₂= 7.2 x 10-4) and 1.0 M NaF.(A) 3.14 (B) 1.1 x 10-4 (C) 7.2 x 10-² (D) 1.1 x 10-3 (E) 7.2 x 10-4 12. What is the solubility of AgCl (in M) in a 0.039 M MgCl₂ solution? (Ksp = 1.56 x 10-10 for AgCl) (A) 2 × 10⁹ (B) 3.90 × 109⁹ (E) 5.6 × 10-10 (C) 2.66 x 10-11 (D) 1.22 x 10-10 13. The greater the intermolecular forces the lower the. (A) melting point (B) boiling point (D) viscosity (E) vapor pres (C) surface tension 14. In the following equation, which is the conjugate base of HOBr? HOBr + H₂O OBr + H30* (C) H₂O* (A) H₂O (E) None (B) OBr (D) HOBr 15. If a process is exothermic and spontaneous at all temperatures, then what must be true? (A) AS >0 (B) AH>0 (C) AG=0 (Ε) ΔΗ = (D) AS <0 16. Which of the following salts would form an acidic solution in water: (A) NaC₂H30₂ (E) Car (B) KNO3 (D) NH4Cl (C) CaCl₂ 17. Calculate the molar solubility of Ag2S (Ksp = 1.6 × 10-49) in water. (A) 1.6 × 10-5 (B) 1.6 x 10-49 (E) 2. (C) 1.0 x 10-15 (D) 3.4 × 10-¹7 Phase Phase
Transcribed Image Text:2 7. The point d is the point. Phase (A) Triple (B) Melting (C) Critical (D) Boiling (E) Freezing 8. Na₂SO4 is added slowly to a solution that is 0,010 M in Ba, Sr, and Ca. Which compound will precipitate first? Ksp BaSO4: 1.5 x 10", SrSO4: 12.8 x 107, CaSO4: 4.0 x 10-12 (A) BaSO4 (B) SrSO4 (C) CaSO4 (D) All same time (E) None 9. The rate constant for a second-order reaction is 0.13 M¹1s. If the initial concentration of reactant is 0.26 mol/L, it takes (A) 1.0 (B) 4.4 x 103 s for the concentration to decrease to 0.13 mol/L. (C) 0.017 (D) 0.50 (E) 30 10. The final pOH after 27.8 mL of 0.050 M HCl solution is added to 33.8 mL of 0.128 M NaOH is:(A) 2.45 (B) 5.44 (C) 1.32 (D) 1.95 (E) 3.43 11. Calculate the percent dissociation of HF in 1.0 M HF (K₂= 7.2 x 10-4) and 1.0 M NaF.(A) 3.14 (B) 1.1 x 10-4 (C) 7.2 x 10-² (D) 1.1 x 10-3 (E) 7.2 x 10-4 12. What is the solubility of AgCl (in M) in a 0.039 M MgCl₂ solution? (Ksp = 1.56 x 10-10 for AgCl) (A) 2 × 10⁹ (B) 3.90 × 109⁹ (E) 5.6 × 10-10 (C) 2.66 x 10-11 (D) 1.22 x 10-10 13. The greater the intermolecular forces the lower the. (A) melting point (B) boiling point (D) viscosity (E) vapor pres (C) surface tension 14. In the following equation, which is the conjugate base of HOBr? HOBr + H₂O OBr + H30* (C) H₂O* (A) H₂O (E) None (B) OBr (D) HOBr 15. If a process is exothermic and spontaneous at all temperatures, then what must be true? (A) AS >0 (B) AH>0 (C) AG=0 (Ε) ΔΗ = (D) AS <0 16. Which of the following salts would form an acidic solution in water: (A) NaC₂H30₂ (E) Car (B) KNO3 (D) NH4Cl (C) CaCl₂ 17. Calculate the molar solubility of Ag2S (Ksp = 1.6 × 10-49) in water. (A) 1.6 × 10-5 (B) 1.6 x 10-49 (E) 2. (C) 1.0 x 10-15 (D) 3.4 × 10-¹7 Phase Phase
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