Chem 230 - Study guides, Class notes & Summaries

NH2 functional group correct answer: amino RNH2 correct answer: primary amine R2NH correct answer: secondary amine R3N correct answer: tertiary amine bronsted-lowry acid correct answer: proton donor bronsted-lowry base correct answer: proton accepter lewis base correct answer: electron donor lewis acid correct answer: electron accepter alkyl halide correct answer: a compound that has an alkyl group bonded to a halogen atom, R-X thiol correct answer: has -SH g...

Gases are more soluble in _______ water. correct answer: cold Is the gas to aqueous reaction endo or exothermic? correct answer: Exothermic What is lattice enthalpy? Its sign of dH? correct answer: The enthalpy change associated with going from solid to gas. It is always endothermic (+dH) What is the enthalpy of hydration? Its sign of dH? correct answer: Enthalpy change associated with going from gas to aqueous. It is always exothermic (-dH) What is enthalpy of solution? correct ...

A) Initial starting solution with brownish yellow correct answer: Fe^3+ A) Initial starting solution with greyish blue correct answer: Cr^3+ A) Initial starting solution with pale green correct answer: Ni^2+ B) So4^2- correct answer: confirmed when precipitate is formed and doesn't dissolve in Nitric acid C) Cl^- correct answer: confirmed when precipitate is dissolved by NH3 D) NO3^- correct answer: confirmed by the brown ring test E) NH4^+ correct answer: confirmed by ...

Which family of organic molecules is a hydro carbon correct answer: aromatic Which two functional groups does NOT contain oxygen? correct answer: amine Which factor is most important in determining the chemistry of an organic molecule? correct answer: the functional groups Two or more compounds with the same molecular formula but with the atoms connected differently are reffed to as correct answer: constitutional groups When hydrocarbons undergo complete combustion, the product(s...

What four factors affect reaction rates? correct answer: -concentration of reactants -Temperature -Catalysts - Physical state of reactants relationship between reaction rate and activation energy correct answer: The higher the activation energy, the slower the reaction rate Effect of catalysts on reaction rates, why does this happen? correct answer: Catalysts speed up reaction rates because it lowers the activation energy What is an autocatalysis? correct answer: The reaction ...

The solution is clear and colorless correct answer: Fe 3+, Cr 3+, and Ni 2+ is absent Step B. The solution was made basic and barium hydroxide was added. A white precipitate formed. correct answer: SO4 2- is present Step C. Silver nitrate was added the precipitate dissolves. correct answer: Cl- is present Step C. A brown ring test was performed and the brown ring formed. correct answer: NO3- is present A flame test on the unknown showed a reddish color. correct answer: Ca 2+ is ...

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Friederich Wohler correct answer: Father of organic chemistry Determined that biological molecules can be synthesized in lab Carbon correct answer: Very stable Wants 4 bonds Can bond with many things Organic Compounds correct answer: Contain carbon Atoms bound by covalent bonds Essential to life! ex. amino acids; DNA Element Bond Preferences correct answer: Carbon: 4 bonds -Can be single, double, or triple Nitrogen: 3 bonds, 1 lone pair -Single, double, or triple Oxygen: 2...

CHEM 214 General Chemistry II Lab - Experiment 009: Solubility Product Constant (Ksp) and Common-Ion Effect. Experiment 009: Solubility Product Constant (Ksp) and Common-Ion Effect References: Suz anne Slayden, 2018, Chemistry 213, 214, 272 Laboratory Experiments, 7th Edition, pages 222-230. George Mason University, Department of Chemistry and Biochemistry. Solubility Product; 2020. Solubility Product, Distance Learning Summer 2020, accessed via Blackboard. CRC Handbook of Chemistry and Physics,...

What is an electrophile? correct answer: compound or ion that are poor in electron density- LOVES AVAILABLE ELECTRONS Same as Lewis Acid What is a nucleophile? correct answer: is an ion or a compound that is capable of donating a pair of electrons-- THEY WOULD LOVE TO ATTACK A NUCLEUS These are the exact same a Lewis Base THESE SHARE ELECTRON DENSITY Examples of Nucleophiles correct answer: I-, Cl-, Br-, HS-, RO-, HO-,NH2- Nucleophilic Attack correct answer: shows the nuc...