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Organic Chem. Quiz 2
Term | Definition |
---|---|
Combined Gas Law | P1V1=P2V2/ T1(K)=T2(k) |
The only source of attraction between atoms & Nonpolar molecules is? | London Dispersion Force |
What is London Dispersion Forces? | Every atom/ molecule Exhibits. Split Second of polarization. Strength increases as mass increases. |
Dalton's Law of Partial Pressure Formula | PT= P1+P2+P3 |
What is Dalton's Law of Pressure? | The total pressure (PT) of a mixture of gases is the sum of the partial pressure (P), of each in individual gas. |
Small molecules = | More energy |
Large molecules = | Less Energy |
Intermolecular Forces | Strength between molecules determines whether any sample of matter is a gas, liquid, or solid. Attraction between molecules. |
What are the 3 types of intermolecular forces? | London Dispersion Forces Dipole- Dipole Hydrogen Bonds |
What is a Dipole Dipole interaction? | The electrostatic attraction between positive and negative dipoles. |
Hydrogen bonds | A type of Dipole-Dipole. involves a H to an O/N. Strength in #'s. Increase boiling point & heat separates bonds. |
Liquids | Very little space between molecules. Density is greater than gas because molecules occupy smaller volume. Molecules have irregular shape between them. |
Surface Tension | The layer on the surface of a liquid produced by intermolecular attractions at it's surface. |
Boiling point factors | The nature 7 strength of intermolecular forces. Molecular size & shape. The more surface area it has the more temp. needed to boil. |
Molecular Shape | When molecules are similar in every way except shape, the strength of its london forces determines it's boiling point. |
Gas Pressure is Measured In? | ATM, Atmospheres |
What is Gas Pressure? | Measures the force; Hitting sides of wall. Pressure is force per unit area exerted against a surface. |
Boyle's Law | A Constant Temp. The volume of a gas is inversely proportional to the pressure. |
Volume increases then pressure goes down. Vise Versa | Boyle's Law |
Keeping temp. Constant | Boyle's Law |
Charles's Law | Holds Pressure Constant For a fixed volume of gas at a constant pressure, the volume is directly proportional to the temp. in Kelvins. (273) |
Temp. increases pressure increases | Charles's Law |
Holds Pressure Constant | Charles's Law |
Gay- Lussac's Law | Holds Volume Constant. A gas at constant volume, the pressure is directly proportional to the temp. in kelvin. (273) |
Temp. increase pressure increases | Gay-Lussac's Law |
Holds Volume Constant | Gay-Lussac's Law |
Homogeneous | Uniform Solution (Sea Water, Air) |
Heterogeneous | Not combined on molecular level. (Sand + Sugar) |
Solvent | The Largest Fraction of a solution in which the other components are dissolved. |
Solute | A substance that is dissolved in a solvent. |
Miscible | When 2 liquids are completely soluble in each other, no matter the amount. Polar + Polar/ nonpolar + nonpolar |
Solubility | max.amount of a solute that dissolves in q |