a Many laboratories keep bottles of 1.0 M solutions of the common acids on hand. Given...
5. Which one of the following 1.0 M solutions would exhibit the lowest conductivity? a. H2SO4 b. HCI c. AICI: d. Sr(NO3)2 6. In a calorimeter, HCl is mixed with NaOH at 20 °C and the volume of the resulting solution is 180 mL. When the reaction is complete the temperature of the solution is 26 °C. Determine the heat for the reaction assuming the specific heat of water is 4.18J/g*C, and the density of the solution is 1.2 g/mL....
8-67 For each of the following solutions, how many milliliters of water should be added to yield a solution that has a concentration of 0.100 M? 8-69 Determine the final concentration of each of the following solutions after 20.0 mL of water has been added. a. 30.0 mL of 5.0 M NaCl solution b. 30.0 mL of 5.0 M AgNO, solutionc. 30.0 mL of 7.5 M NaCl solution d. 60.0 mL of 2.0 M NaCl solution 8-115 At a given temperature, which of...
How many milliliters of concentrated sulfuric acid, 94.0% by weight, density 1.831 g/cm3 , are required to prepare 250 mL of a 0.05 M solution?
Lab 5 Buffers 1. Dissolved ions in salt solutions can act as acids or bases and react with water to produce hydronium ions or hydroxide ions that contribute to the pH of the salt solution. Since strong acids and strong bases completely ionize in solution, the reverse reaction essentially does not occur, meaning that the resulting conjugate base of a strong acid or conjugate acid of a strong base do NOT act as acids or bases. Ions that are conjugate...
How many milliliters of 1.0 M NaOH should be added to a 100 mL solution containing 12.212g of benzoic acid (F.W. 122.12g ; Ka = 6.28 x 10-5) to get a pH of 4.8?
buffer solutions
1. Determine the volume of 1.0 M tartaric acid, H2CaH&Os, solution that when diluted to a total volume of 250.0 mL produces a solution that is 0.050 M in tartaric acid. 2. Determine the mass of potassium hydrogen tartrate, KHC&H4O6, required to prepare 250.0 mL of a solution that is 0.050 M in hydrogen tartrate ion. 3a. Write a balanced equation and corresponding K, expression for the ionization of the weak acid lactic acid (HC3HsO3, Ka 1.62 x...
2. How many ml of a 50% w/v acetic acid solution are required to prepare 1 L of 5% w/v acetic acid? 3. How many ml of concentrated HNOs are required to prepare 2L of 0.15N HNOs? 4. How many milliliters of a stock solution of 20% w/v NaOH are required to prepare 800 ml of a 2.5% w/v solution? 5. Suppose that you start with a 5X solution A and you want a final volume of 10 microliters of...
Partner: 1. How many grams of NiCl2:6H20 will be used to prepare a 0.0350 M. 500.0 mL of NiCl! solution? 2. How many milliliters of 12.0 M HCl are required to prepare a 2.00 M 250.0 mL of HCI solution? 3. 15.00 mL of an unknown concentrated solution was diluted to 100.0 mL. Then 35.00 mL of this diluted acid solution was titrated with 23.24 mL of 0.3724 M standard NaOH solution to reach the ending point. What is the...
how many milliliters of a 0.25 M HCl solution would be used to prepare 100.0 mL of a 0.050 M solution of the acid?
You need to prepare a solution of .25 M HCl for the experiment you are doing today. You only have the commercially available concentrated HCl (28 % w/w) on hand. The experiment requires using HCl at three points, each using a volume of 15 milliliters. Describe how you would prepare the required amount of HCl (in exact quantities of stock HCl and water) prior to doing the experiment. Assume the density of water and the HCL solution (which is mostly...