23. A. B. C. D. E. 24. A. B. C. D. E. Which of the following substances will produce an acidic solution when dissolved i

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23 A B C D E 24 A B C D E Which Of The Following Substances Will Produce An Acidic Solution When Dissolved I 1 (45.28 KiB) Viewed 23 times

23. A. B. C. D. E. 24. A. B. C. D. E. Which of the following substances will produce an acidic solution when dissolved in water? ABCDE KCI Mg(OH)2 NHẠC Na₂O LiOH How much water at 100 °C could be vaporized by the addition of 120 kJ of heat? (AHvap = 40.7kJ/mol) 25. Which of the following buffer compositions of equal volumes can withstand the greatest addition of a 0.0550 mol dm3 solution of hydrochloric acid before collapsing? ABCD 2.9 g 6.1 g 53 g 87 g 5.0 g A. 0.121 M H₂S and 0.667 M NaHS 0.821 M H₂S and 0.217 M NaHS 0.821 M H₂S and 0.909 M NaHS 0.821 M H₂S and 0.100 M NaHS 0.100 M H₂S and 0.217 M NaHS 26. 525 mg of a sparingly soluble salt (X₁Y₂(S)) with a molar solubility of 3.68 x 104 mol.dm-3 is placed into 500 cm³ of water. If the salt produces X²+(aq) and Y³(aq) ions, then its solubility product constant is: A. 6.75 x 10-18 B. 8.13 x 10-7 C. 3.37 x 10-17 D. 7.29 x 10-16