CHEM 2545 Midterm/Final Exam
Questions And All Correct Answers.
Strength and concentration - Answer Acid hazards depend on
NaHCO3 - Answer Baking soda formula
Acetone - Answer Organic solvent that dissolves many compounds with low water solubility
Sugars on skin - Answer What did sugar represent
Metal jewelry - Answer What did aluminum foil represent
Proteins in skin - Answer What did egg yolk and egg white represent
Contact lenses - Answer Polystyrene
H2SO4, brown - Answer Chemical added to sugar. color
NaOH, dissolve, heat - Answer Chemical added to aluminum foil, result
3 strong acids, yellow HNO3 and HCl, brown H2SO4 - Answer Chemical added to cotton, color
3 strong acids - Answer Chemical added to nylon
HNO3, bleach; brown gas, heat - Answer Chemical added to hair
HNO3, bleach, NaOH - Answer Chemical added to egg yolk
HNO3, bleach, NaOH - Answer Chemical added to egg white
, Extensive - Answer Dependent on amount of sample used
Color, density, melting point, boiling point, refractive index, solubility, molecular weight -
Answer 7 physical properties
Vapor pressure of liquid = applied pressure of system - Answer Definition of boiling point
Less sensitive - Answer Is bp more or less sensitive than mp
1 atm (760 mm Hg) - Answer What pressure is normal bp measured at
Weakest IMF, electron cloud distortion, straight chain, temporary - Answer Induced dipole-
dipole
Polar bonds, permanent partial charges - Answer Dipole-dipole
Special kind of dipole-dipole involving H and other electronegative atom - Answer Hydrogen
bonding
Attraction between full charges, strongest IMF - Answer Ionic bonds
Between pure components - Answer Where is bp of mixture of liquids?
True - Answer Density changes with temperature: T/F
To identify a liquid and assess purity - Answer Purpose of RI
v light in air/v light in liquid - Answer Ratio of velocities
n^20 = n^T + 0.00045(T-20) - Answer RI correction equation
Temperature and wavelength - Answer What two factors is RI dependent upon
Questions And All Correct Answers.
Strength and concentration - Answer Acid hazards depend on
NaHCO3 - Answer Baking soda formula
Acetone - Answer Organic solvent that dissolves many compounds with low water solubility
Sugars on skin - Answer What did sugar represent
Metal jewelry - Answer What did aluminum foil represent
Proteins in skin - Answer What did egg yolk and egg white represent
Contact lenses - Answer Polystyrene
H2SO4, brown - Answer Chemical added to sugar. color
NaOH, dissolve, heat - Answer Chemical added to aluminum foil, result
3 strong acids, yellow HNO3 and HCl, brown H2SO4 - Answer Chemical added to cotton, color
3 strong acids - Answer Chemical added to nylon
HNO3, bleach; brown gas, heat - Answer Chemical added to hair
HNO3, bleach, NaOH - Answer Chemical added to egg yolk
HNO3, bleach, NaOH - Answer Chemical added to egg white
, Extensive - Answer Dependent on amount of sample used
Color, density, melting point, boiling point, refractive index, solubility, molecular weight -
Answer 7 physical properties
Vapor pressure of liquid = applied pressure of system - Answer Definition of boiling point
Less sensitive - Answer Is bp more or less sensitive than mp
1 atm (760 mm Hg) - Answer What pressure is normal bp measured at
Weakest IMF, electron cloud distortion, straight chain, temporary - Answer Induced dipole-
dipole
Polar bonds, permanent partial charges - Answer Dipole-dipole
Special kind of dipole-dipole involving H and other electronegative atom - Answer Hydrogen
bonding
Attraction between full charges, strongest IMF - Answer Ionic bonds
Between pure components - Answer Where is bp of mixture of liquids?
True - Answer Density changes with temperature: T/F
To identify a liquid and assess purity - Answer Purpose of RI
v light in air/v light in liquid - Answer Ratio of velocities
n^20 = n^T + 0.00045(T-20) - Answer RI correction equation
Temperature and wavelength - Answer What two factors is RI dependent upon
