CHEMISTRY COMMUNITY

Derek_Petrosian_3I

The question asks to identify all the functional groups present in a given molecule. The answer key has "alkene" as one of the functional groups.

Are alkenes and alkynes really counted as functional groups?

Derek_Petrosian_3I

The answer key says that the compound should be named 2-Isopropyl-1,1-dimethylcyclopentane

Would it also be correct to name the compound 1,1-dimethyl-2-sec-propylcyclopentane?

Derek_Petrosian_3I

Sarai_Ferrer_3C wrote:Will we be given solutions for the practice quiz #3?

Yes, solutions to practice quiz #3 will be posted in a couple of days. The answers to the last quiz were posted on the Saturday before the quiz.

Derek_Petrosian_3I

Can somebody explain to me why 10 on the quiz 2 prep is false? This reaction is second order because you are given k=[A]^2. If you look at the equation we derived in class for the half-life of a second order reacion (which is also on the formula sheet), you will find t(1/2) = 1/(k*[A] initial). Thi...

Derek_Petrosian_3I

For Practice Midterm 2013, question 5b asks to "arrange the following substances in order of increasing standard molar entropy: CHF3, CF4, CH3F, CH2F2" The answer says CH3F<CH2F2<<CHF3<CF4 This seems incorrect, as CF4 should have the least molar entropy and CH2F2 should have the greatest (...

Derek_Petrosian_3I

Trouton's Rule is the observation that many values of standard entropies of vaporization of liquids are close to 85 J/mol*K. An example of where you can use this is when you are asked to find the approximate standard enthalpy of vaporization of a liquid. Let’s say you want to find the standard entha...

Derek_Petrosian_3I

In the email we received about information on significant figures, I came across this: "When your calculation involves more than one operation, you will need to follow the standard order of operations. You may have learned the order of operations as PEMDAS (parentheses, then exponents, then mul...

Derek_Petrosian_3I

According to the book, Trouton's rule is the observation that many enthalpies of vaporization for liquids are close to 85 kJ/mol*K. Self-test 9.7A on page 328 asks to estimate the standard enthalpy of vaporization of liquid bromine, which boils at 59 degrees Celsius, using Trouton's rule. How is thi...

Derek_Petrosian_3I

a) Calculate the work that must be done against the atmosphere for the expansion of the gaseous products in the combustion of 1.00 mol C6H6 (l) at 25 degrees Celsius and 1 bar. In the solutions manual, the products of this combustion are CO2 gas and liquid water. Why is water liquid here and not gas?

Derek_Petrosian_3I

I have a question about Self Test 8.1A on page 264. I used volume = mass/density to find the volume of water and ice. 100g/1.00 g/cm^-3 = 100cm^-3 = 100mL = 0.001L (water) 100g/0.92g/cm^-3 = 108.7cm^-3 = 108.7mL = 0.001087L (ice) delta V = V(final) - V(initial) = V (ice) - V(water) delta V = 0.00108...

CHEMISTRY COMMUNITY

Search found 10 matches

Question 2.47 in the Organic Chemistry Textbook

Question 1.16 in the Organic Textbook

Re: Quiz 3 Winter 2017

Re: Quiz 2 Winter 2017

Re: Midterm Winter 2017

Re: Trouton's rule

Re: Quiz 1 Preparation Answers

Trouton's Rule [ENDORSED]

HW Problem 8.93

Self Test 8.1A on page 264