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Physical Chemistry

Calculating pOH and pH.

Calculate the pOH and pH at 298K of solutions having the following ion concentrations: OH = 1.3 x 10^-2 M.

Calculating concentration of an ion

Given the concentration of hydroxide ions, use the ion product constant of water to calculate the concentration of the other ion at 298 K. OH = 1.3 times 10 to the negative 2 power M

Value of PV

What is the change in the value of PV when a gas is cooled by expansion or diffusion?

Supercritical fluid

Define Supercritical fliud. Give an example and it's properties. Which fundemental thermodynamic property is important to the solubility of an analyte in supercritical fluid?

Weight of neon

What weight of neon exerts a pressure of 20atm when confined to 2 liters at a temp of 100C?

Thermal equilibrium

10.0g of Fe(s) at 98.0 degrees Celsius is placed in 50.0mL of H2O(l) at 20 degrees Celsius. Assuming no energy is lost to the surroundings what is the final temperature of Fe(s) and H2O(l) at thermal equilibrium?

A four part question

Using the reaction of hydrogen chloride (hydrochloric acid) and calcium hydroxide to produce water and calcium chloride answer the following: A. How many moles of hydrochloric acid react with 0.5 moles of calcium hydroxide? B. How many grams of hydrochloric acid react with 1 mole of calcium hydroxide? C. How many grams of cal

Equation of temperatures

Cyclopropane is used as a general anesthetic. If a sample of cyclopropane stored in a 2.00L container at 10.0 atm and 25C is transferred to a 5.00L container at 5.00 atm, what is the resulting temperature?

Formation of molecules in a reaction

Using the reaction of hydrogen chloride (hydrochloric acid) and calcium hydroxide to produce water and calcium chloride answer the following: What is the maximum number of molecules of calcium chloride that can be formed in this reaction?

Finding the Net Ionic Equation

What is the net ionic equation of 2Fe(NH4)2(SO4)2*6H2O + 6K2C2O4 + H2O2 + H2SO4 2K3[Fe(C2O4)3]*3H20 + 3K2SO4 + 2(NH4)2 SO4 + 8H2O

Oxidation states of Iron

2Fe(NH4)2(SO4)2*6H2O + 6K2C2O4 + H2O2 + H2SO4 ---- 2K3[Fe(C2O4)3]*3H2O + 3K2SO4 + 2(NH4)2SO4 + 8H2O I need to find the oxidation state of Iron in both the reagent side and product side of the equation.

Smelters and Galena Conversion

A small smelter converts galena (lead sulfide) into pure lead by heating the ore with an excess of oxygen. Sulfur dioxide is produced as an air pollutant, as a result of the reaction. To remove sulfur dioxide, the flue gas is passed through a slurry of lime (calcium oxide) to produce calcium sulfate. The smelter processes 120

Mass balance

See attached for full problem. The concentration of isobutene in the overhead product is 4.8 mole %, and the concentration of propane in the bottoms is 0.7 mole %. Calculate the moles of the various components in the overhead and bottoms per 100 moles of feed.

Gibbs Phase Rule

What is the consequence (what does it mean?) when a system has zero degrees of freedom as calculated by the Gibbs Phase Rule? What do I need to conclude about such a system?

Chemistry Multiple Choice Quiz with Answer Grid

I am preparing for my chemistry exam and would appreciate a multiple choise quiz on the last chapter (i.e., ideal gas law, superconductivity, extensive properties, critical pressure, aerobic, etc.). Can you provide me with such a quiz with the answers provided. Thanks. Chemistry Quiz 2: Multiple Choice Questions 1) Eleme

Mass Balance Problem with Fuel

A furnace burns a fuel oil, the composition of which can be represented as (CH2) n. It is planned to burn this fuel with 10 % excess air. Assuming complete combustion, calculate the composition of the flue gas on a dry basis. Please see attachment for the rest of the problem, including relevant diagrams.

Molecular weight and solution problem

The molecular weight of NaOH is 40. the molecular weight of a widely used buffer, HEPES, is 255. HEPES has a pK of 7.5 and is available in the acid form. how many grams og HEPES and NaOH are needed to produce one liter of a 0.5 molar solution of pH 7.5? of pH 7.0? of pH 8.5?

How to set up chemistry problem

If Aluminum Chloride reacts with Copper II Carbonate and 0.25 moles of Aluminum Chloride are used, how much Copper II Chloride is made in moles?

Triple point

The sublimation pressures of solid chlorine are 352 Pa at -112 C and 35 Pa at -126.5 C. The vapor pressures of liquid Chlorine are 1590 Pa at -100 C and 7830 Pa at -80C. Calculate a)heat of vaporization b)heat of sublimation c)heat of fusio d)triple point I have already figured out the first three. The heat of sublimation

Physical chemistry

I have attached the graphs. I don't think the first one is useful, but i needed to plot the data and find the heat of vaporization. Hence, the reason for the second graph. I know that the slope is equal to the heat of vaporization/RT but I don't think I am getting the right answer.

Statistical Mechanics

2. Given the vibrational temperature of HCl is 4227 K, a) what is qvib at a temperature of 2600 K, keeping the zero point energy? and referenced to v = 0? b) what is qvib at a temperature of 3100 K, keeping the zero point energy and referenced to v= 0? c) What is the vibrational contribution to CV, at the temperature 2600 K