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
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...
If in solution A, [OH-(aq)]= 4.55 × 10-9 M, then pH=_____; if in solution B, [H3O+(aq)]=9.7×10-3 M, then pH=______.