
a 30.0 mL sample of 0.250 M HClO is titrated with 0.125 M KOH. Calculate the pH of the solution after the addition of the following volumes of base. Ka= 3.5 x 10^-8 for HClO. a) 0.0 mL base added b) 25.0 mL c) 50.0 mL d) 55.0 mL e) 60.0 mL f) 65.0 mL g) 75.0 mL
10. Assume you are carrying out the titration of 50 mL of a 0.025 M solution of acetic acid with 0.1023 M NaOH. Acetic acid has a Ka of 1.8 × 10−5 . (a) Calculate the pH of the solution at V = 0, V = 0.3Veq, V = Veq, and V = 1.2Veq. (Veq is the equivalence point volume) (b) If a phenolphthalein indicator was used in this titration, where would the apparent endpoint occur? Assume the apparent endpoint...
22) How many moles of CH3CH2Cl are contained in 548 mL of 0.0788 M CH3CH2Cl solution? A) 4.32 x 10-2 mol B) 2.32 x 10-2 mol C) 6.95 x 10-2 mol D) 1.44 x 10-2 mol E) 5.26 x 10-2 mol 23) How many milliliters of a 0.266 M CSNO3 solution are required to make 150.0 mL of 0.075 M CSNO3 solution? A) 53.2 ml B) 42.3 mL C) 18.8 ml D) 23.6 mL E) 35.1 ml 24) What is...
22) How many moles of CH3CH2Cl are contained in 548 mL of 0.0788 M CH3CH2Cl solution? A) 4.32 x 10-2 mol B) 2.32 x 10-2 mol C) 6.95 x 10-2 mol D) 1.44 x 10-2 mol E) 5.26 x 10-2 mol 23) How many milliliters of a 0.266 M CSNO3 solution are required to make 150.0 mL of 0.075 M CSNO3 solution? A) 53.2 ml B) 42.3 mL C) 18.8 ml D) 23.6 mL E) 35.1 ml 24) What is...
Suppose 0.250 g of cobalt(II) chloride hexahydrate is dissolved in 50.0 ml of 4 M HCl, and heated to 80°C in a cuvette having 1.00 cm path length. At this temperature, the percent transmittance of the solution at 690 nm is measured to be 48.0%. What is the molar mass of cobalt(II) chloride hexahydrate? Select one: a) 129.84 g/mol b) 237.93 g/mol c) 58.93 g/mol d) 165.87 g/mol