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A. An unknown liquid boiling around 185 +/- 5 degrees C in 5% HCl but is insoluble in water and in a pH 5.5 buffer. Shaking the unknown with p-touluenesulfonyl chloride in aqueous NaOH produces a clear solution that, when acidified, yields a white precipitate. Give its name and structure.
B. An unknown liquid boiling around 185 +/- 5 degrees C in 5% HCl and in a pH 5.5 buffer but is insoluble in water. Shaking the unknown with p-touluenesulfonyl chloride in aqueous NaOH produces a white precipitate that doesn't dissolve in dilute HCl. Give its name and structure.
if 100% of the NaCl molecules dissociated, the van't Hoff factor i=2 calculate the experimental van't Hoff factor of NaCl from your data. I dissolved 30 g of salt into 100ml of water
Vanadium(V) Oxide reacts with calcium according to the chemical equation below. When 10.0 moles of V2O5 are mixed with 10.0 moles of Ca, which is the limiting reagent?
The solid fuel in the booster stage of the space shuttle is a mixture of ammonium perchlorate and aluminum powder. On ignition, the reaction that takes place is 6 NH4ClO4(s) + 10 Al(s) ? 5 Al2O3(s) + 3 N2(g) + 6 HCl(g) + 9 H2O(g)
determine the molarity of each of the ions present in the following aqueous salt solutions.
Light with a wavelength of 330nm shines on a piece of metal with a threshold energy of 4.60 eV. What would you expect for the kinetic energy
If the partial pressure of a gas produced in a reaction was determined to be 0.35 atm in a 161.0 mL container and at a temperature of 25.0°C, how many moles of gas were produced? (Hint: Use the ideal gas law and convert temperature to Kelvin, volu..
A mixture of heptane/decane at 1.8 bar, 120?C contains 80% by mol heptane. At what pressure should it be flashed to obtain a stream that is 90% rich in heptane? What are the composition of the liquid and the amounts of the two phases?
draw and label structures cis and trans isomers of 3,4 -dibromo-3-hexene, 3) structure of terpin hydrate. Is it more water soluable or less than the starting material?
What is the difference between a hypothesis and a theory? a hypothesis is a proposal that has been tested extensively, whereas a theory is an initialy stated proposal a hypothesis is a conclusion made after a theory was tested words hypothesis
The procedure uses 3.0M NaOH. However, the student notices that the only solution of NaOH is concentrated (19M ) NaOH solution. How many mL of water are needed to make 500mL of a 3.0M NaOH
crystallizes in a body-centered cubic array of atoms in which the length of the unit cell's edge is 569.7 pm (10-12 m). Calculate the density of the metal in g/cm3.
write a net ionic equation for the reaction of each antacid with aqueous HCl. include the state of each species. a)MgCO3 b)CaCO3 c)Mg(OH)2
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