CHEMISTRY COMMUNITY

Amy Luong 1L

You can also think of it as T increases, it will thus speed up the reaction (causing more collisions) and increasing k, the magnitude of the rate constant as well.

Amy Luong 1L

For the cell diagrams, why don't we include the numbers of the electrode (for ex: Midterm 2009 we put lH+l when there are 2H+'s?
And is it acceptable to place a comma between two of the ions rather than another line?

Amy Luong 1L

Would someone mind explaining why "delta S knot" is not a criterion for assessing the spontaneity of a reaction but the "delta S total rxn" shows that a reaction is spontaneous when it is greater than 0?

Amy Luong 1L

Would someone mind explaining exactly what it means conceptually when Ecell is greater than or less than E at the standard state?

Amy Luong 1L

For answers regarding specific heat, the course reader lists the units as kJ/gC, however is it acceptable to leave our answers as J/gC as the quiz had?

Amy Luong 1L

In the equation for change in entropy (delta s)= nRln(V2/V1), when would you know whether or not there should be a negative sign in front of the "n"? Is it based on whether it's expansionary or not?

Amy Luong 1L

When calculating entropy is it always necessary to change the temperature to Kelvin?

Amy Luong 1L

When do we know whether or not to include "ion" at the end of the coordination compound?

Amy Luong 1L

For electronegativity, is Cl less electronegative than O? As in does the trend from right to left decrease EN less drastically than going downwards?

Amy Luong 1L

I had a similar question and Lewis structure to the one above^ How would we know whether to place the H on the outer structure as opposed to N or O. (Similarly with #43) Is it based on ionization?

Amy Luong 1L

Hello Professor Lavelle, I was just curious as to whether or not we take into account significant digits within calculations (for ex: mass to mass, mole to mass, etc.) or whether we count significant digits at the end when providing the answer. For the most part I've tried both and haven't had a lar...

CHEMISTRY COMMUNITY

Search found 11 matches

Re: Energy vs Reaction Progress Curve and temperature

Re: Writing a cell diagram, electrodes

Midterm 2007 Q3B- Explanation of (delta)S total

Concept of Ecell vs. Estandard

Units for specific heat capacity: kJ/gC or J/gC

Entropy Changes Based on Changes in Volume

Re: Generating entropy - the usage of signs

Naming ions

Re: What to use to find the EN difference

Re: Problem 2.37c Lewis Structure for H2C(NH2)COOH

Re: Clarifying how many sig figs needed