please help if possible Question 21 (5 points) Which of the following is true for the...
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Question 16 (5 points) If the Keq of the following reaction is 0.38, 2A (9) + 3B (s) = 7C (), what is the Keq of the reaction below? 14C (0) = 4A (9) + 6B (s) 5.26 O 0.760 1.12 6.93 0.144 Question 17 (5 points) Al 105°C. AsEs decomposes into ASF3 and F2 according to the following chemical equation. Question 17 (5 points) At 105°C, AsF5 decomposes into AsF3 and F2 according to the...
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07 Question (12 points) e See page 816 1st attempt See Hint Part 1 (6 points) Calculate the solubility (in M) of cobalt(II) hydroxide, Co(OH)2(s) in H20. Ksp = 3.50x10-16 at a specifictemperature. See Hint Part 2 (6 points) What is the pH of this solution of cobalt(II) hydroxide? pH 04 Question |See page 792 (15 points) A buffer solution includes a weak acid and its conjugate base. 1st attempt See Hint Feedback Include...
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Question 6 (5 points) Which of the following will increase when HF is added to pure water at 25 °C? Okw Орн O(OH) Осно*) Ka Question 7 (5 points) aculate the Kb of the conjugate base of an acid with a ka value of 2.9 X 100 25 °C Question 7 (5 points) Calculate the Kb of the conjugate base of an acid with a Ka value of 2.9 x 10-10 at 25 °C. O 3.4 x...
QUESTION 21 2.5 points According to the Bronsted-Lowry definition of a base, a base is a substance that O increases the hydroxide ion concentration in water. O can react with water to form OH- O can donate an electron pair to form a covalent bond O Can accept a proton from an acid QUESTION 22 2.5 points How many moles of HCOONa must be added to 1.0 L of 0.10 M HCOOH to prepare a buffer solution with a pH...
D Question 25 Calculate the pH of a 0.10 M CH3NH,Cl solution. Ky(CH NH) - 4.4x104 5.82 943 Сосоо 4.36 8.18 Question 26 5 pts When a strong acid is added to a strong base in a titration, what is expected at the equivalence point? A acidic solution from the conjugate acid of the strong base A neutral solution with a pH - 7 A acidic solution from the strong acid A basic solution from the strong base A basic...
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Revised 02/19/2009 Mill- Practice Quiz for Chapter 16 (Note, you should not necessarily expect multiple choice questions on the test.) Hydride ion H' is a stronger base than hydroxide ion OH. Complete the following reaction > H' (aq) + H2O (l) What is the molar concentration of hydronium ion H,O in pure water at 25° C? What is the molar concentration of hydroxide ion OH if the solution pH is 4.282 at 25 C? Calculate the molar concentration of...
1. The following pictures represent solution at various points in the titration of a weak acid with a strong base. HA + OH - HOH + A OH - -OH Which picture to the left corresponds to cach of the following points in the titration? before the addition of any NaOH at the equivalence point where only a salt remains which solution is a buffer? Multiple Choice 1. Barium hydroxide is slightly soluble in water, with a Kap of 5.00...
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The following table, used for question 16, is partially complete: (ОН) pH 2.68 pОН ener 8.4 x 10 euen 16. (3 points) Fill in the six empty cells in the table. The following table, used for questions 2-8, is partially complete: Ka 1.8 x 10 pka Conj. Base formula pKb Acid Formula CH3COOH HOBI HNO2 5.40 3.14 2.2 x 10 Sec 17. (6 points) Fill in the twelve empty cells of the table above. 18. What is the...
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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...
26 & 27
Question 26 5 pts When a strong acid is added to a strong base in a titration, what is expected at the equivalence point? A neutral solution with a pH - 7 A acidic solution from the strong acid A acidic solution from the conjugate acid of the strong base A basic solution from the strong base A basic solution from the conjugate base of the strong acid Question 27 5 pts Which molecule or ion below...