
estion 10 What is the pH of 5.69 * 10-2 M HNO 3(aq)? a. 2.54 b.5.65...
88. What volume of 0.921 M Na2CO3 solution contains 74.0 g of NazCO3? a. 0.642 L b . 8.52 * 10 L c.0.757 L d. 7.22 x 10'L e. 1.31 L 89. An aqueous nitric acid solution has a pH of 2.15. What mass of HNO is present in 20.0 L of this solution? a. 0.11g b. 0.022 g c. 3.7 g d. 6.8 g e. 8.9 g 90. The pH of purified water (or of a neutral solution) is...
11. What is the pH of 6.5 x 10' M KOH(aq) at 25 °C?(K - 1.01 X 10-) a. 4.19 b. 1.54 c. 4.19 d. 9.81 e. 12.46
When the following equation is balanced, the coefficient of HNO 3 is __________. HNO 3 (aq) + CaCO 3 (s) → Ca(NO 3) 2 (aq) + CO 2 (g) + H 2O (l) A.1 B.5 C.2 D.4 E.3
Consider the neutralization reaction 2HNO3(aq)+Ba(OH)2(aq)⟶2H2O(l)+Ba(NO3)2(aq) 2 HNO 3 ( aq ) + Ba ( OH ) 2 ( aq ) ⟶ 2 H 2 O ( l ) + Ba ( NO 3 ) 2 ( aq ) A 0.115 L 0.115 L sample of an unknown HNO3 HNO 3 solution required 35.5 mL 35.5 mL of 0.100 M Ba(OH)2 0.100 M Ba ( OH ) 2 for complete neutralization. What is the concentration of the HNO3 HNO 3 solution?...
a. A solution of HNO, has a pH of 3.63. What is the molarity of the solution? Molarity = b. A solution of HNO3 has a pH of 5.31. What is the molarity of the solution? Molarity = c. A solution of HNO3 has a pH of 1.24. What is the molarity of the solution? Molarity =
46. What is the H30' concentration in 0.0013 M LiOH(aq) at 25 °C? (Kw = 1.01 x 10-4) a. 7.7 x 10-12 M b. 1.3 x 10-3 M c. 1.0 × 10-14 M. d. 1.0 x 10-7M e. 1.3 * 10-17 M
What volume (in mL ) of a 0.175 M HNO 3 solution is required to completely react with 28.6 mL of a 0.108 M Na 2 CO 3 solution according to the following balanced chemical equation? N a 2 C O 3 (aq)+2HN O 3 (aq)→2NaN O 3 (aq)+C O 2 (g)+ H 2 O(l)
3.
What is the pH of a 0.0045 M HNO 3 solution? Be sure to show your
work
3. What is the pH of a 0.0045 M HNO3 solution? Be sure to show your work.
3. What is the approximate expected pH of a 0.030 M HNO, solution? What is the final pH after 1 drop (0.05 mL) of 6 M HCl is added to 1.0 L of freshly prepared pure water that was significant pH change? 4. pH of 7.0. Is there originally at a a What is the molarity of pure water at 20°C? 5. a. b. Does the concentration of water change significantly (from the value in 4-a) when enough acetic acid...
10. Calculate pH of a solution formed by 20.0 mL of 0.10 M HNO, after 19.9 mL of 0.10 M KOH are added. 11. Which salt in water is acidic, basic, or neutral? AICI, NaBr, K,SOa, NH4I 12. The formula of a coordination compound is Li[Co(NHs)2(H2O)Clh . [26 pt) a) Name the coordination compound. b) Point out formulas of ligands. c) What is charge of Co? What is coordination number of the complex? d) Sketch all possible geometric isomers, labeling...