Solubility and Lewis Dot
What are two factors that affect solubility?
particle size
state of matter
temperature
solubility of the compound
Ionic bonds form between ________ and ________.
Metals; nonmetals.
What makes molecules, such as water, polar?
Electrons are not shared equally by the atoms. This results in dipoles where one is slightly more negative while the other is slightly more positive.
What does ‘n’ stand for in the formula for molarity, M = n/V?
n = number of moles
What would you call CO?
Carbon Monoxide or Colorado
Draw the lewis dot diagram for CO2
O=C=O
What sort of bond makes a "sea of electrons" and how do we know?
metallic, results in high conductivity, high flexibility, malleability,
Which type of bond TEND to have the lowest boiling point?
nonpolar covalent
What is the molecular weight (Z) of the compound NaOH?
What is the name of the ionic compound Mg3P2?
magnesium phosphide
What is the difference between solubility and insolubility?
Solubility is the quality of being able to dissolved, explicitly in water. While insolubility is the opposite, it is either very hard to dissolve or can not be dissolved
What bonds are generally harder to break, ionic or covalent?
ionic bonds are typically much stronger than covalent. Ionic bonds have a complete transfer of electrons to create stability. While covalent relies on sharing electrons, which is not as strong as electrostatic forces.
Is CH3F a polar or nonpolar molecule? Why?
polar as the F pulls the electrons a lot more than the Hydrogens or Carbon do.
How many moles is 65 g of NaCl?
1.1 mol
Is C2H6 covalent or ionic and what is its name?
covalent, dicarbon hexahydride
How does temperature affect the solubility of a solid or liquid into another liquid?
An increase of temperature, increases solubility
A material appears as a salt crystal that dissolves in water but has a very high boiling point. What is it?
Most likely ionic
What is the difference between polar covalent and ionic bonds?
The electronegativity is greater for ionic bonds than for polar covalent.
Then means that for ionic bonds electrons are moved from one atom to the other while in polar covalent the electrons are just pulled really far away from one atom to the other (but are still shared).
What is the molarity if 6 mol of KCl is added into 1.5 L of solution?
4 mol/L or 4 M
What is AgNO3 covalent or ionic and what is its name?
Silver nitrate
Draw the lewis dot diagram of SO3
Sulfur Trioxide, sulfur in the middle with the oxygen bonded, one is double bounded the others are single
What are at least four properties of ionic bonds?
reactive, high melting/boiling point, conductive in water, nonconductive out of water, soluble, commonly form salts,
Name 5 physical differences that occur when comparing polar vs non-polar intermolecular forces?
Higher polarity = higher surface tension, higher boiling point, lower evaporation rate, tend to be liquid or solid at room temperature, high solubility
Non-polar = low surface tension, low boiling point, high evaporation rate, tend to be liquid or gas at room temperature, low solubility
What is the molarity of a solution that contains 22.3 g of CA(OH)2 in 300 ml of solution.
22.3 g =0.301 mol
0.301/0.3 = 1 M
What is the chemical formula for Aluminum Oxide?
Al2O3