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Chemists studied the formation of phosgene by sealing 1.00 atm of carbon monoxide and 1.06 atm of chlorine in a reactor at a certain temperature. The pressure dropped smoothly to 1.35 atm as the system reached equilbrium. Calculate Kp(in atm-1) for
CO(g) + Cl2(g) ↔ COCl2(g
where did the energy values come from? how did you know what values to use so you could calculate the change in
A sample of pure NO2 is heated to 336 C at which temperature it partially dissociates according to the equation 2NO2->O2+2NO
Calculate te theoretical quantities of thionyl chloride and sodium borohydride needed to convert benzoin to E-stilbene.
a Balanced reaction equation must have the same number of atoms of each element on both sides of the equation. to verify that the equation is balanced, count the otoms of each element on both sides of the reaction
Define detection limit. Does a compound with high molar absorptivity have a higher or lower limit of detection than a compound with low molar absorptivity
A toothpaste contains 0.24 by mass sodium fluoride used to prevent dental caries and 0.30 by mass triclosan , a preservative and antigingivitis agent. One tube contains 125 toothpaste.
What is the change in internal energy (in J) of a system that releases 675 J of thermal energy to its surroundings and has 7.60x10^2 cal of work done on it
This is maintained by a number of buffers, such as the carbonic acid/bicarbonate system. Write out the acid-base reaction and state qualitatively how this buffer solution resists changes in pH. Given the Ka of carbonic acid, H2CO3 is 4.5 x 10-7.
The standard free energy change for the reaction of nitrogen gas with hydrogen gas to produce ammonia is -32.9 kJ. Calculate the equilibrium constant for this reaction at 25°C.
Explain Buffer Solution and Henderson-Hasselbalch H-H, What is the pH of a solution prepared by mixing 50.00mL of 0.10 M NH3 with 25.00mL of 0.10 M NH4Cl? Assume that the volume of the solutions are additive and that Kb= 1.8 x 10 -5 for NH3.
If categorize substances as molelecular, macromolecular, ionic or metallic, in which if any categories are all the members.
unchanged, or less if the residue was washed with hot distilled, deionized water instead of cold distilled deionized water
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