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Lab Exam 2
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- 1Ethylamine (Polar)Water: yes
* Both are polar
Cyclohexane: yes (slightly)
* Similar structure (C+H) - 21-chloropropane (Non-polar)Water: no
* Different polarity/structure
Cyclohexane: yes
* Non-polar and similar CH groups - 3Aluminum chloride (Polar)Water: yes
* Polar
Cyclohexane: no
* Different polarity/structure - 4Normal Boiling PointTemperature at which the vapor pressure of the solution is equal to the atmospheric pressure
* P=1.0 atm - 5HexaneLondon dispersion forces
Low boiling point - 62-hexanoneDipole-dipole between C and O
Higher boiling point - 72-hexanolHydrogen bonding (strongest bond)
Highest boiling point - 8What is the order of reaction of CH3ClFirst order; ln(C) vs time has an R squared value closest to 1 which indicates the best fit line
- 9What is the rate of reaction?Slope of the best fit line which is given by the graph
- 10What is the rate of reaction of experiment 2?Slope of the best fit line (first order reaction)
- 11Determine the freezing point depressionDelta(T)=T(solvent) - T(solution)
- 12Molar Mass of Unknown AConvert 1mL to g of solute
Convert g of solvent to kg (1/1000)
M= (g solute * kf)/
(kg solvent * delta (T)) - 13MolalityNumber of moles of solute in one kilogram of solvent
- 14Colligative PropertiesSolutions that depend on number of solute particles vs. solvent particles, but not on the type of species present
- 15Order of reaction with respect to reagentQuantifies effect of changes in concentration of just that reactant on the reaction rate
- 16BonusK2SO4: largest delta(T)
* Extremely polar and dissociates into 2 K+ and SO4-
Sugar: smallest delta (T)
* Polar and does not dissociate
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- Fichas sobre Lab Exam 2, creado por jlmarsh el 16/03/2015.
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- jlmarsh
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