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The pH of a 0.010 mol L-1 solution of a weak monoprotic acid is 2.09 at 25oC. What is the pKa for this acid?
suppose a cup of coffee at the campus coffee shop is 1.50 and a cup of hot tea is 1.25 and a students beverage budget
What is the mole fraction of NaCl in this solution. what would be the vapor pressure of this solution at 45C? The vapor presssure of pure water is 23.8 torr at 25C and 71.9 torr at 45C
If 27.0 mL of 0.0200 M KMnO4 were required to titrate a 0.425 g sample of K3[Fe(C2O4)3] * 3H2O, what is the % purity of the complex
Write net Bronsted equations that show the acidic or basic nature of the following substances, given the pH. For polyprotic acids, only show one proton transfer. Remember that spectator ions are not included.
Using the standard entropy values: H2(g), S° = +130.6 J mol-1 K-1 I2(s), S° = +116.12 J mol-1 K-1 HI(g), S° = +206.0 J mol-1 K-1 calculate the standard entropy change, DeltaS°, for the reaction
total ion concentration what conductivity should be observed for 0.050 M Na2SO4?
at ordinary body temperature 37 the solubility of in water in contact with air at ordinary atmospheric pressure 1.0
Calculate molality and mass percent of alcohol in the mixture. A solution of ethanol, C2H5OH, in water has a concentration of 1.996 mol L-1. At 20.0 ºC its density is 0.9677 g mL-1
Suppose you have two solutions to titrate with NaOH: (a) 10mL of 0.1 M HCl and (b) 10 mL of 0.1 M CH3COOH.
Write the net ionic equations and determine the standard potentials for the reaction of copper or zinc with tin (IV). Which of the two reactions should be spontaneous
If 34.0 mL lead(II) nitrate solution reacts completely with excess sodium iodide solution to yield 0.640 g precipitate, what is the molarity of lead(II) ion in the original solution?
A collapsed balloon is filled with He to a volume of 11.2L at a pressure of 1.00 atm. Oxygen (O2) is then assed so that the final volume of the ballon is 21
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