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16 Nov 2019
What is the molar concentration(M) of CH_3 OH in a solution prepared by dissolving 12.5 g of CH_3 OH in a sufficient water to give exactly 230.00 ml of solution? A) 1.70 M B) 0.391 M C) 0.0543 M D) 0.700 M E) 6.20 M When 220. mL of 1.50 times 10^- 4 M hydrochloric acid is added to 135 mL of 1.75 times 10^4 M Mg (OH)_2, the resulting solution will be A) acidic. B) basic C) neutral. D) It is impossible to tell from the information given. 5 A solution is labeled as 1.0 M NH_3 (aq). Identify the products that are in equilibrium with NH_3 and H_2 C in this solution. A) NH_2 and H_3 O^+ B) NH_3, H^+ and OH^- C) NH_3 and H_2 O D) NH_4^+ and OH^- E) NH_2, H^+, and H_2 O When titrating a weak monoprotic acid with lithium chloride at 25 degree C, the A) pH will be less than 7 at the equivalence point. B) pH will be equal to 7 at the equivalence point. C) pH will be greater than 7 at the equivalence point. D) the titration will require twice the moles of base than acid to reach the equivalence poi E) the titration will require twice the moles of acid than base to reach the equivalence point if the pKa of HCHO_2 is 3.74 and the pH of an HCHO_2/NaCHO_2 solution is 3.11, which of the follow JE? A) [HCHO_2] [NaCHO_2] E) It is not possible to make a buffer of this pH from HCHO_2 and NaCHO_2. What is the molar concentration (M) of CH_#OH in a solution prepared sufficient water to give exactly 230.00 mL solution? A) 1.70 M B) 0.391 M C) 0 054 M D) 0.700 M E) 6.20 M When 220 mL of 1.50 times 10^- 4 M hydrochloric acid is added to 135 mL resulting solution will be A) acidic. B) basic c) neutral. D) It is impossible to tell from the information given. A solution is labeled as 1.0 M NH_3 (aq). Identify the product that in this solution. A) NH_2 and H_3O^+ B) NH_3, H^+, and OH^- C) NH_3 and H_2 O D) NH_4^+ and OH^- E) NH_2^-, H^+and H_2 O When titrating a weak monoprotic acid with lithium chloride a A) pH will be less than 7 at the equivalence point. B) pH will be equal to 7 at the equivalence point. C) pH will be greater than 7 at the equivalence point. D) the titration will require twice the moles of base E) the titration will require twice the moles of acid If the pKa of HCHO_2 is 3.74 and the pH of an HCHO_2/NaCH TRUE? A) [HCHO_2] [NaCHO_2] E) It is not possible to make a buffer of this pH
What is the molar concentration(M) of CH_3 OH in a solution prepared by dissolving 12.5 g of CH_3 OH in a sufficient water to give exactly 230.00 ml of solution? A) 1.70 M B) 0.391 M C) 0.0543 M D) 0.700 M E) 6.20 M When 220. mL of 1.50 times 10^- 4 M hydrochloric acid is added to 135 mL of 1.75 times 10^4 M Mg (OH)_2, the resulting solution will be A) acidic. B) basic C) neutral. D) It is impossible to tell from the information given. 5 A solution is labeled as 1.0 M NH_3 (aq). Identify the products that are in equilibrium with NH_3 and H_2 C in this solution. A) NH_2 and H_3 O^+ B) NH_3, H^+ and OH^- C) NH_3 and H_2 O D) NH_4^+ and OH^- E) NH_2, H^+, and H_2 O When titrating a weak monoprotic acid with lithium chloride at 25 degree C, the A) pH will be less than 7 at the equivalence point. B) pH will be equal to 7 at the equivalence point. C) pH will be greater than 7 at the equivalence point. D) the titration will require twice the moles of base than acid to reach the equivalence poi E) the titration will require twice the moles of acid than base to reach the equivalence point if the pKa of HCHO_2 is 3.74 and the pH of an HCHO_2/NaCHO_2 solution is 3.11, which of the follow JE? A) [HCHO_2] [NaCHO_2] E) It is not possible to make a buffer of this pH from HCHO_2 and NaCHO_2. What is the molar concentration (M) of CH_#OH in a solution prepared sufficient water to give exactly 230.00 mL solution? A) 1.70 M B) 0.391 M C) 0 054 M D) 0.700 M E) 6.20 M When 220 mL of 1.50 times 10^- 4 M hydrochloric acid is added to 135 mL resulting solution will be A) acidic. B) basic c) neutral. D) It is impossible to tell from the information given. A solution is labeled as 1.0 M NH_3 (aq). Identify the product that in this solution. A) NH_2 and H_3O^+ B) NH_3, H^+, and OH^- C) NH_3 and H_2 O D) NH_4^+ and OH^- E) NH_2^-, H^+and H_2 O When titrating a weak monoprotic acid with lithium chloride a A) pH will be less than 7 at the equivalence point. B) pH will be equal to 7 at the equivalence point. C) pH will be greater than 7 at the equivalence point. D) the titration will require twice the moles of base E) the titration will require twice the moles of acid If the pKa of HCHO_2 is 3.74 and the pH of an HCHO_2/NaCH TRUE? A) [HCHO_2] [NaCHO_2] E) It is not possible to make a buffer of this pH
Deanna HettingerLv2
29 Jan 2019