10. A solution contains 0.10 M HCl and 0.10 M HNO, K. = 4.6 x 10....
can someone please explain the answers by showing steps please? i have an exam tommorow 18. Novocaine, used as a local anesthetic in dentistry, is a weak base (at 25 °C.K. = 8.91 x 10“). What is the ratio of the concentration of the base to that of the acid in the blood plasma (pH = 7.40) of the patient? (Base): (acid) = ? (Note: For example, if (Base)/(acid) -0.25 then it's a 1:4 ratio but (Base)/(acid) = 4 then...
44. A 0.10 M solution of a weak monoprotic acid has a hydronium-ion concentration of 4.6 x 10 *M. What is the acid- ionization constant, Ka, for this acid? 2.2.1 x 10-2 b. 3.2 * 10-3 C.4.6 x 104 d. 2.1 x 10-6 e.5.5 x 10-5
name 1. Equal volumes of 0.10 M HCl and 0.16 M HNO, were mixed. What is the pH of the resulting word 2. Equal volumes of 0.10 M HCl and 0.22 M CH,COOH (K.-1.8 X 10') were mixed. What is the pH of the resulting solution? 3. Equal volumes of 0.10 M HCl and 0.1.6 X 10-MHCIO. were mixed. What is the pH of the resulting solution?
Solid silver nitrate is added slowly to a solution that is 0.0010 M in sodium chloride and 0.0010 M in sodium bromide. What % of the bromide ions remain in solution, ie , unprecipitated, Just before silver chloride begins to precipitate? Kap for AgCI-1.8 x 10-10, Kp for AgBr- 3.3 x 10-13 10. 0.18% 0.018% 0.0010% 0.00010% 0.0018% a. b. c. d. e. 11. Calculate the concentration of F ions in saturated CaF2 solution at 25°C. Kap- 3.9x 10-" a....
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...
d) 1.7 x 10-4M ) 1.4 x 10' M 8. Find the pH of a 3.02 M HCL solution. a) 7.1 x 10M b ) 1.6 x 10-2M c)-0.48 M
Clicker What is the pH of a solution that contains 0.05 M NH, and 0.10 M NH Br? Ko (NH3) = 1.76 x 10-5, Hint: convert Ko to K, before using the equation A. 9.25 B. 8.94 C. 9.55 pH =pK, + log [base] D. 4.45 ([acid]) E. 10.97
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...
52. Why is the hydronium ion concentration in a solution that is 0.10 M in HCl and 0.10 M in HCOOH determined by the concentration of HCl? 53. From the equilibrium concentrations given, calculate K, for each of the weak acids and K, for each of the weak
A solution contains 0.10 M concentrations of Ba2+, Ca2+, and Sr2+. Na2CO3 is slowly added to the solution. In what order will the ions begin to precipitate? What is the concentration of the first ion when the 2nd begins to precipitate? Ksp for BaCO3 = 2.58 x 10-9, for CaCO3 = 3.36 x 10-9, and for SrCO3 = 5.60 x 10-10.