Search found 30 matches

by Briana Yik 1H
Thu Mar 14, 2019 4:41 pm
Forum: General Rate Laws
Topic: intermediate molecules
Replies: 3
Views: 72

intermediate molecules

Why are intermediate molecules not included in the rate law? Thank you!
by Briana Yik 1H
Thu Mar 14, 2019 4:35 pm
Forum: General Rate Laws
Topic: Slowest step
Replies: 1
Views: 36

Slowest step

Why do we use the rate of the slowest step for the overall rate law of an equation?
by Briana Yik 1H
Thu Mar 14, 2019 4:34 pm
Forum: Second Order Reactions
Topic: Half life for second order reaction
Replies: 1
Views: 37

Half life for second order reaction

What is the formula for half life for a second order reaction? Thank you
by Briana Yik 1H
Fri Mar 08, 2019 12:17 am
Forum: Second Order Reactions
Topic: graph
Replies: 2
Views: 62

graph

if you are looking at a graph, how can you tell if it is a first or second order reaction?
by Briana Yik 1H
Fri Mar 08, 2019 12:15 am
Forum: Zero Order Reactions
Topic: initial concentration
Replies: 6
Views: 109

initial concentration

Why do zero order reactions not depend on the initial concentrations?
by Briana Yik 1H
Fri Mar 08, 2019 12:10 am
Forum: Method of Initial Rates (To Determine n and k)
Topic: reaction orders
Replies: 2
Views: 48

reaction orders

What do reaction orders represent?
by Briana Yik 1H
Thu Feb 28, 2019 7:20 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: delta G
Replies: 1
Views: 33

delta G

what is the difference between delta G and delta Gr?
by Briana Yik 1H
Thu Feb 28, 2019 7:13 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Organization of cell diagrams
Replies: 9
Views: 108

Organization of cell diagrams

Do you need to put Pt(s) if there is a gas and aqueous molecule in a cell diagram?
by Briana Yik 1H
Thu Feb 28, 2019 7:11 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: stoichiometric coefficients
Replies: 2
Views: 43

stoichiometric coefficients

Do stoichiometric coefficients affect the cell potential?
by Briana Yik 1H
Thu Feb 21, 2019 12:05 pm
Forum: Van't Hoff Equation
Topic: Van't Hoff use
Replies: 13
Views: 418

Van't Hoff use

in what situation would we use the Van't Hoff equation?
by Briana Yik 1H
Thu Feb 21, 2019 12:03 pm
Forum: Balancing Redox Reactions
Topic: balance equations
Replies: 2
Views: 73

balance equations

Can someone please explain the general steps to balancing an equation with the charges?
by Briana Yik 1H
Tue Feb 19, 2019 11:14 pm
Forum: Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
Topic: S value
Replies: 3
Views: 209

S value

why do more complex molecules have higher S values? Thank you
by Briana Yik 1H
Tue Feb 19, 2019 11:10 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Delta H
Replies: 5
Views: 82

Delta H

why does delta H positive not favor the forward process?
by Briana Yik 1H
Tue Feb 19, 2019 11:06 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: 5/2R vs 3/2R
Replies: 4
Views: 291

5/2R vs 3/2R

how do we know when to use 5/2R versus 3/2R?
by Briana Yik 1H
Thu Feb 07, 2019 12:06 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Degeneracy
Replies: 4
Views: 91

Degeneracy

In degeneracy, when W=X^N, what does the x represent and how do we figure it out?
by Briana Yik 1H
Thu Feb 07, 2019 12:04 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: delta u
Replies: 2
Views: 56

delta u

When there is constant temperature, is delta u always 0? Thank you
by Briana Yik 1H
Thu Feb 07, 2019 12:03 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: constant volume
Replies: 3
Views: 62

constant volume

Is there always no work done when volume is constant?
by Briana Yik 1H
Thu Jan 31, 2019 12:56 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Standard Enthalpy
Replies: 4
Views: 90

Standard Enthalpy

Can someone explain why standard enthalpy od O2 is zero? Thank you
by Briana Yik 1H
Thu Jan 31, 2019 12:54 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Reversible reactions
Replies: 1
Views: 33

Reversible reactions

How does systems at equilibrium relate to reversible and irreversible reactions?
by Briana Yik 1H
Thu Jan 31, 2019 12:51 pm
Forum: Phase Changes & Related Calculations
Topic: finding heat
Replies: 3
Views: 71

finding heat

How do we know when to use latent heat and specific heat? Thank you!
by Briana Yik 1H
Fri Jan 25, 2019 12:01 am
Forum: Phase Changes & Related Calculations
Topic: Irreversible and Reversible process
Replies: 2
Views: 39

Irreversible and Reversible process

Can someone further explain what the difference between reversible and irreversible process is? Thank you
by Briana Yik 1H
Thu Jan 24, 2019 11:44 pm
Forum: Phase Changes & Related Calculations
Topic: State functions
Replies: 4
Views: 60

State functions

Can someone explain why heat is not a state function? Is it not interchangeable with temperature? Thank you
by Briana Yik 1H
Thu Jan 24, 2019 11:37 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Delta H
Replies: 4
Views: 59

Delta H

When Delta H is positive, does it mean the reaction is endothermic or exothermic? Thank you
by Briana Yik 1H
Fri Jan 18, 2019 12:52 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: pressure
Replies: 2
Views: 56

pressure

Why does increasing pressure by adding an inert gas not affect the concentration? Thank you
by Briana Yik 1H
Fri Jan 18, 2019 12:38 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Polyprotic Acids
Replies: 1
Views: 49

Polyprotic Acids

Do we always disregard the second equation of polyprotic acids when calculating concentrations?
by Briana Yik 1H
Wed Jan 16, 2019 9:12 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: ICE table
Replies: 2
Views: 48

ICE table

How do we know when we should find concentrations by using an ICE table or by using the number of moles?
by Briana Yik 1H
Wed Jan 09, 2019 9:21 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Equilibrium table
Replies: 1
Views: 32

Equilibrium table

How can we tell if x will be less than 5% of the initial value and we can use the shortcut for finding x in the equilibrium table? Thank you
by Briana Yik 1H
Tue Jan 08, 2019 11:35 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Finding Q
Replies: 1
Views: 64

Finding Q

How do we find the expression for Q?
by Briana Yik 1H
Tue Jan 08, 2019 11:18 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Exothermic Reactions
Replies: 9
Views: 129

Exothermic Reactions

How do I find out if a reaction is exothermic or endothermic? Thank you!

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