CHEMISTRY COMMUNITY

Kimberly Wagas 1H

In the second molecule of the 2015 Final 9B, they numbered the molecule starting with the cyclo-substituents and said propan-2-ol. Shouldn't the numbering start with the alcohol since it is the functional group and therefore has higher priority so that it should be ...propan-1-ol?

Kimberly Wagas 1H

For 7A on the 2011 final, it names the structure as E? How do you determine priority for deciding Z/E for cycloalkenes?

Kimberly Wagas 1H

Are we expected to memorize the energy differences or the bond angles for the different conformations?

Kimberly Wagas 1H

I read online that according to IUPAC double bonds have higher priority than triple bonds for numbering the longest carbon chain, but most TAs and UAs I have talked to have said that they have equal priority and to pick the numbering scheme that'll give you the lowest numbers so the triple bond can ...

Kimberly Wagas 1H

What is the difference between benzyl and phenyl?

Kimberly Wagas 1H

In an example in the textbook, the alkyl substituent was given the lower number than the halide. Why does iodo not get the lower number if halides have higher priority over alkyl substituents?

Kimberly Wagas 1H

In page 17 of the Intro to Organic Chemistry textbook, there are two examples of geometric isomers with multiple double bonds? Which double bond do you consider when deciding if an isomer is cis or trans?

Kimberly Wagas 1H

What is the difference between alkyl carbanions and aryl carbanions?

Kimberly Wagas 1H

Will we have to know alkyl and aryl carbanions for the quiz?

Kimberly Wagas 1H

In page 21 of the organic chemistry textbook, it names the structure 3-ethyl-1,1-dimethyl-2-propylcyclohexane and also notes that the common incorrect name is 1-ethyl-3,3-dimethyl-2-propylcyclohexane. In a previous page, it states that if the numbering schemes contain equivalent numbers, you assign ...

Kimberly Wagas 1H

Structural formulas do not have a fixed convention, and in the end, nobody uses them for anything more complicated than basic hydrocarbons because they quickly get very confusing. Parentheses can be used to signify repetition of a group, branching off, or just multiple copies of a branch. I would s...

Kimberly Wagas 1H

Stronger nucleophiles have higher polarizability. Br has a greater atomic radius compared to F, so the distance between its electrons and nuclear charge is greater. The greater the distance of electrons from nuclear charge, the less control the nuclear charge has on the charge distribution, and thus...

Kimberly Wagas 1H

What are equivalent hydrogens and what is its significance in organic compounds? What exactly does it mean when "hydrogens are in the same chemical environment"?

Kimberly Wagas 1H

Are we expected to know the common names for alkanes in addition to the IUPAC name for this class?

Kimberly Wagas 1H

Do we need to know how to do the steady state approach for the quiz?

Kimberly Wagas 1H

Would a concentration cell be considered a galvanic cell or an electrolytic cell and why?

Kimberly Wagas 1H

What types of problems and calculations could we be asked regarding electrolysis for the midterm? Or should we just know the concept behind electrolysis?

Kimberly Wagas 1H

What types of problems and calculations could we be asked regarding electrolysis for the midterm? Or should we just know the concept behind electrolysis?

Kimberly Wagas 1H

Just to clarify, so for this question since the molecules are all in a gas phase and tetrahedral, are we supposed to think of entropy in terms of bond vibrations and mass as opposed to number of arrangements/positions of the atoms as you would with residual entropy?

Kimberly Wagas 1H

How do you identify the oxidizing agent and the reducing agent in a reaction?

Kimberly Wagas 1H

What is the electromotive force? Why does it represent the maximum potential difference?

Kimberly Wagas 1H

When a question states assume "ideal gas behavior," what information/properties does this indicate?

Kimberly Wagas 1H

How do you determine W, the number of microstates, for a molecule such as bromobenzene ( $C_{6}H_{5}Br$ )?

Kimberly Wagas 1H

The equation C=q/ \Delta T comes from the heat capacity equation q=C \Delta T, so they just isolated C by dividing by \Delta T. The given information of liters and molarities is meant to show that the calorimeter is at constant volume which indicates that no work is being done (w=-P \Delta V=0 when ...

Kimberly Wagas 1H

The textbook states that "Provided the initial and final states are the same, a change carried out reversibly always does more work than a change carried out irreversibly"?

Why is the amount of work a system can do greater in reversible processes as opposed to in irreversible processes?

Kimberly Wagas 1H

When would you use kJ or kJ/mol?

Kimberly Wagas 1H

Are we expected to know how to solve for the pH after the equivalence point?

Kimberly Wagas 1H

When naming coordination compounds, the course reader says that if a ligand is polydentate, then use the prefix bis-, tris-, etc. However, I came across some examples that included carbonato (which can be mono- or polydentate) and they did not use bis...etc. I'm assuming that it is because it is mon...

Kimberly Wagas 1H

For complexes with an overall negative net charge, are we expected to know the Greek/Latin name of the element when naming the transition metal on the quiz? Ex) [CuCl4]2- Would we have to know it is tetrachlorocuprate(II) ion or is tetrachlorocopper(II) acceptable? Because on one of the practice qui...

Kimberly Wagas 1H

How do you determine if a ligand is polydentate? Also, how do you determine the maximum number of places on the ligand that can bind simultaneously to a single metal center? Can you tell just by looking at the chemical formula by memorizing general trends about the ligands or do you draw out the lew...

Kimberly Wagas 1H

I made a video on how to find the oxidation state of a metal in a coordination compound

[youtube]https://youtu.be/LaYZUJzbLkE[/youtube]

Kimberly Wagas 1H

In order to find the oxidation number of the transition metal, you have to take into account the charge of the ligands and the overall net charge of the entire compound. The oxidation number of the transition metal and the charge of the ligands should add up to the net charge. Ex) Determine the oxid...

Kimberly Wagas 1H

What is the range for the wavelength in nm of electromagnetic radiation for ultraviolet, visible light, and infrared? Do we have to know the range for x Rays, y Rays, microwaves, and radio waves for the midterm?

Kimberly Wagas 1H

How do you determine if a molecule is polar or nonpolar?

Kimberly Wagas 1H

How do you determine if a molecule is a Lewis acid or base in a reaction?

Kimberly Wagas 1H

The textbook discusses how the greater the extent of orbital overlap, the stronger the bond. Can someone explain why?

Kimberly Wagas 1H

Just to clarify, hypothetically, if part A was a problem with multiple steps of calculations within that one problem would you use use significant figures in each step or only at the end with your final answer?

Kimberly Wagas 1H

Can the Rydberg formula only be used for transitions between energy levels of a single hydrogen atom with only one electron? If so, are we expected to know how to calculate the wavelength of light for atoms with multiple electrons?

CHEMISTRY COMMUNITY

Search found 38 matches

Numbering Final 9B

Z/E for cycloalkenes

Re: Winter 2016 Final Exam Review and Information

Priority

Benzyl vs Phenyl

Numbering Priority

Geometric Isomers with multiple double bonds

Alkyl and Aryl Carbanions

Re: Quiz 3 Winter 2016

3-ethyl-1,1-dimethyl-2-propylcyclohexane

Re: Structural Formula parentheses

Re: polarizability/nucleophiles

Equivalent H

Common Names for Alkanes

Re: Quiz 2 Winter 2016

Concentration Cell

Electrolysis

Electrolysis

Re: Arrange in order of increasing standard molar entropy

Identifying Oxidizing Agent and Reducing Agent

Electromotive Force

Ideal Gas in the Context of the Problem

Microstates, W, for a molecule

Re: Equations used in Homework 8.25

Work in Reversible Process vs Work in Irreversible Process

kJ vs kJ/mol

Titration

Polydentate Ligand Naming

Naming Complex Anions

Determining if a Ligand is Polydentate

Re: naming Coordination compounds

Re: naming Coordination compounds

Electromagnetic Radiation

Polar or Nonpolar Molecules [ENDORSED]

Determining Lewis Acid or Base

Re: Sigma bonds and Pi Bonds

Re: How many sf to carry through in problems with multiple p

Re: Rydberg Formula