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In a modified version of the unknown acid analysis experiment, a 0.7032 g sample of unknown monoprotic weak acid was dissolved in water using a 100-mL-size volumetric flask. A 10.0 mL aliquot of this weak acid solution was titrated with a 0.0498 M NaOH solution. The equivalence point was reached by adding 11.62 ml of NaOH from the buret. What is the molar mass of this unknown acid?
A certain weak base has a Kb of 7.80 × 10-7. What concentration of this base will produce a pH of 10.16
A mixture of 4.55atm of H2 and 4.55atm of I2 is contained in a 1.0L vessel at 430 degree C. The equilibrium constant (Kp) for the reaction: H2(g) + I2(g) 2HI(g) at this temperature is 54.3. Determine the equilibrium partial pressures of H2,
Before the reaction began, the concentrations of the reactants were 0.060 M of SO2 and 0.050 M O2. After the equilibrium is reached, the concentration
The combustion reaction of propane, C3H8, in the presence of molecular oxygen, O2, is an equilibrium reaction that produces carbon dioxide and water. Express the equilibrium constant for this reaction.
How would you determine the dS and dH for Cu2+ binding soil given K (distance) values at two different temperatures
calculate the molarity of acid (or base) remaining in solution when 20mL of 0.400M HNO3 is added to 16.3mL of 0.258M NaOH?
The electron is passed down an electron-transport chain, at the end of which NADP+ is reduced. The reduction potentials of P700+, A and NADP+ at pH7 and 25 oC are 0.490V, -0.900V, and -0.350V respectively.
The Ksp for calcium sulfate is 7.1 x 10^-5. What is the concentration of Ca^2+ in equilibrium with CaSO4(s) if [SO4^2-] = 2.0 x 10^-2 M
Calculate the molecular mass of the nonionic solutes: 8.02 g of solute in 861 g of water lower the freezing point to -0.430 degrees C.
If you wanted to adapt this procedure to prepare the analogous propoxy compound, how much propyl iodide would you have to use to carry out the reaction on the same scale?
write the equation for self-ionization of water and why ammonia is a weak base.
tap water with a Cl- ion concentration of 1*10^-5 mol/L? Ksp=1.77*10^-10
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