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Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5. Enter your answer with 2 decimal places. Enter scientific notation as 1.23E4. (a) When 11.50 mL of 0.470 M HNO3 have been added. (b) When 65.00 mL of 0.470 M HNO3 have been added.
Sulfur dioxide gas reacts with oxygen to produce gaseous sulfur dioxide. when the pressure on the reaction at equilibrium is lowered, the equilibrium will
Assuming that the smallest measurable wavelength in an experiment is 0.670 fm (femtometers), what is the maximum mass of an object traveling at 605 m·s-1 for which the de Broglie wavelength is observable
calculate the molar mass of the solute (acetic acid) and suggest what the structure might be.
Rb has two naturally occurring isotopes 85Rb and 87Rb, with masses 84.9118 amu and 86.9092 amu, respectively. The average atomic mass is 85.468 amu.
20.00 ml of 0.100F Pb(No3)2 (FW 331.2) are mixed with 15.00 ml of 0.125 F Nal (FW 149.9). Lead (II) and iodide form an insoluble salt pbl2 (FW 461.0) Calculate the concentration of each of the remaining ions after mixing. [Pb+2], [i-],[na+],[n03-]..
Oxalate ion, which can be abbreviated ox2-, is a ligand for Cu2+, forming the complex ion Cu(ox)22-. The formation constant for this ion is 3.0 x 108. The solubility of Cu(OH)2 is enhanced in the presence of oxalate
Consider a gas in a 1.0 L bulb at stp that is connected via a valve to another bulb that is initially evacuated. Answer the following concerning what occurs when the valve between the two bulbs is opened.
Determine the entropy change for freezing 6.33 grams of C 2 H 5 OH at 158.7 K? H =-4600 J/mol. Express your answer in units of J/K.
what is the percent h2so4 for a solution consisting of 4.62 equivalencies of h2so4 mixed
Given N2 (g) + 3 H2 (g) ? 2 NH3 (g), which scenario will allow you to eventually reach an equilibrium mixture involving these chemicals. Place only H2 into a sealed vessel.
The molar solubility of AgCl in 6.5 x 10^-3 M AgNO3 is 2.5 x 10^-8 M. In deriving Ksp from these data, which of the following assumptions are reasonable? A) Ksp is the same as solubility.
Calculate the molar solubility of thallium chloride in 0.20M NaCl at 25 degrees Celcius. Ksp for TICl is 1.7 x 10 -4. What volume of 0.500 M HNO3 is needed to titrate 60.00 mL of 0.500 M Ca(OH)2 to the equivalence point?
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