Chem Lab - Experiment 12, 13 and 14 Quiz

It is the state of matter where the molecules are close together and they are able to SLIDE past on top of each other.
Solid
Liquid
Gas
Plasma
It is the state of matter where the molecules have no motion and are held in a definite arrangement.
Solid
Liquid
Gas
Plasma
It is the state of matter where the atoms/molecules are moving rapidly with high kinetic energy and little interactions between them, thus occupying the shape and volume of the container.
Solid
Liquid
Gas
Plasma
What property of liquid causes the paper clip to float on top of the water in the evaporating dish?
Viscosity
Surface Tension
Solubility
Heat of Vaporization
What happens when soap solution is added to the water with a paper clip floating on top?
The paper clip sinks
The paper clip rise
The water separates from the paper clip
The water dissolves the paper clip
What is the reason for the high surface tension of water?
Electromagnetic Force
Covalent Bonding
Hydrogen Bonding
Ionic Bonding
It is a measure of the fluid's resistance to flow.
Surface Tension
Solubility
Viscosity
Diffusion
Which among the following has the highest viscosity?
Sugar Solution
Water
Coconut Oil
Glycerol
It is the amount of heat needed to be absorbed in order to transform a liquid into its gas phase.
Heat of Sublimation
Heat of Fusion
Heat of Vaporization
Heat of Formation
Which among the following has the highest heat of vaporization? (Therefore, it will be slowest to vaporize)
Water
Acetone
Alcohol
Ether
Which of the following is highly soluble in water?
Ether
Chloroform
Alcohol
Coconut Oil
Which between these two solids, FeCl3 and K4Fe(CN)6, has the higher molecular mass?
FeCl3
K4Fe(CN)6
Which between these two solids, FeCl3 and K4Fe(CN)6, will diffuse faster in water?
FeCl3
K4Fe(CN)6
What color will appear in the interface between FeCl3 and K4Fe(CN)6
Yellow
Colorless
Blue
Orange
As the molecular mass of a particle increases, the rate of diffusion will ____.
Increase
Decrease
Stay the same
I dont know
5 Minute Break... Bonus Question: What is your favorite subject?
What acid was used to react with the solid in experiment 13?
Sulfuric Acid (H2SO4)
Acetic Acid (HOAc)
Hydrochloric Acid (HCl)
Nitric Acid (HNO3)
What solid was used to react with the acid?
Sodium Bicarbonate
Sodium Carbonate
Sodium Chloride
Sodium Sulfate
What is the product of the reaction between H2SO4 and Na2CO3?
H2CO4 and NaCl
H2CO3 and NaS
H2CO3 and Na2SO4
H2O and Na2S
What is the product of the decomposition of H2CO3 (Carbonic Acid)
Water and Oxygen
CO2 and H2O
Carbon Dioxide and Hydrogen Carbonate
H2O and C2H4O
Carbonic Acid is unstable and easily decomposes into water and carbon dioxide (gas). Carbonic Acid is found in what beverage?
Iced Tea
Wine
Soda
Milk
The volume of gas generated by the reaction of Na2CO3 and H2SO4 is proportional to the _____.
Pressure in the flask
Moles of Na2CO3 that was added in the flask
Concentration of sulfuric acid
Moles of Na2CO3 consumed in the reaction
Using the formula PV=nRT, find the volume of gas that will be generated when 0.00200 moles of Na2CO3 reacted with excess Sulfuric Acid to produce CO2 gas, at 25 deg C and 1 atm pressure. (3 pts.)
0.0489 mL
48.9 mL
48.9 L
0.0489 cubic meters
If we INCREASE the amount of Sodium Carbonate used for the reaction (still with excess sulfuric acid), the volume of gas generated will ____.
Increase
Decrease
Stay the same
I honestly don't know
If we INCREASE the room/ambient temperature to 35 deg C, the volume of gas generated will _____.
Increase
Decrease
Stay the same
I honestly don't know
If we DECREASE the room/ambient temperature to 0 deg C (freezing temperature of water), the volume of gas generated will _____.
Increase
Decrease
Stay the same
No more gas volume because the gas will freeze
If we can INCREASE the ambient pressure to let's say, 1.10 atm, the volume of gas generated will _____.
Increase
Decrease
Stay the same
I honestly don't know
Based on your answer in the previous question, volume of gases are ______.
Compressible
Incompressible
Rigid
Just like liquids
Which Gas Law describes the relationship between Volume and Pressure?
Boyle's
Charle's
Avogadro's
Gay-Lussac's Law
5 Minute break.. Enter your favorite color:
A 0.5 mole fraction salt solution will exert less pressure than pure water because of what colligative property?
Osmotic Pressure
Vapor Pressure Reduction
Boiling Point Elevation
Freezing Point Depression
An ice cream can be formed in ice and salt mixture because of what colligative property?
Osmotic Pressure
Vapor Pressure Reduction
Boiling Point Elevation
Freezing Point Depression
Meat can be boiled and cooked at a temperature higher than 100 deg C if salt is added because of what colligative property?
Osmotic Pressure
Vapor Pressure Reduction
Boiling Point Elevation
Freezing Point Depression
Solvents can move across semi permeable membrane because of what colligative property of solution?
Osmotic Pressure
Vapor Pressure Reduction
Boiling Point Elevation
Freezing Point Depression
What is the molal boiling point elevation constant for water?
0.52 deg C/molal
0.86 deg C/molal
1.52 deg C/molal
1.86 deg C/molal
What is the molal freezing point constant for water?
0.52 deg C/molal
0.86 deg C/molal
1.52 deg C/molal
1.86 deg C/molal
Find the boiling point of a salt solution with 2 molal NaCl concentration.
102.04 deg C
100.52 deg C
101.04 deg C
101.4 deg C
Find the boiling point of a salt solution with 4 molal NaCl concentration.
102.04 deg C
102.8 deg C
100.52 deg C
102.08 deg C
Find the freezing point of a salt solution with 2 molal NaCl concentration.
0 deg C
-3.72 deg C
-1.86 deg C
-5.58 deg C
Find the freezing point of a salt solution with 3 molal NaCl concentration.
0 deg C
-3.72 deg C
-1.86 deg C
-5.58 deg C
If the osmotic pressure inside the cell is higher than the osmotic pressure outside the cell, the tonicity is _____.
Isotonic
Hypotonic
Hypertonic
I don't know
If the osmotic pressure outside the cell is higher than the osmotic pressure inside the cell, the tonicity is _____.
Isotonic
Hypotonic
Hypertonic
I don't know
If the osmotic pressure inside the cell is the same as the osmotic pressure outside the cell, the tonicity is _____.
Isotonic
Hypotonic
Hypertonic
I don't know
True or False: The boiling point elevation will be the same for a salt solution in water and sugar solution in water, as long as the molal concentrations are the same.
True
False
True or False: The boiling point elevation will be the same for a salt solution in water and salt solution in alcohol, as long as the molal concentrations are the same.
True
False
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