## Search found 23 matches

Mon Mar 11, 2019 1:05 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Pre-equilibrium approach
Replies: 1
Views: 79

### Pre-equilibrium approach

For the example today, (3/11), is the K the k1 of the step 1 rate?
Mon Mar 11, 2019 1:03 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Frequency Factor
Replies: 2
Views: 108

### Frequency Factor

Will we be given the frequency factor, or how could we find it in a question.
Mon Mar 11, 2019 1:01 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: For question 7.29
Replies: 1
Views: 74

### For question 7.29

How do I know the radicals, initializing, propagation, or terminating, and chain-terminating step of

O3 + Cl --> CLO + O2

ClO + O --> Cl + O2
Mon Mar 04, 2019 4:33 pm
Forum: Method of Initial Rates (To Determine n and k)
Topic: 7A. 1 in the 7th edition
Replies: 4
Views: 137

### 7A. 1 in the 7th edition

What is the question trying to ask? I am extremely confused on this one.
Mon Mar 04, 2019 4:29 pm
Forum: Method of Initial Rates (To Determine n and k)
Topic: Collision Theory
Replies: 1
Views: 91

### Collision Theory

How much are we expected to know about collision theory?
Mon Mar 04, 2019 4:28 pm
Forum: Method of Initial Rates (To Determine n and k)
Topic: 7C.3 book example
Replies: 1
Views: 79

### 7C.3 book example

In the example with NO, in the answer, where did the O2 come from?
Sun Mar 03, 2019 7:10 am
Forum: General Rate Laws
Topic: 7C.5
Replies: 1
Views: 82

### 7C.5

How do I know what molecularity a rate law is, and how do I know which chemicals to use?
Sun Mar 03, 2019 7:08 am
Forum: General Rate Laws
Topic: rate Determing Steps
Replies: 1
Views: 83

### rate Determing Steps

How do I identify a rate determining step?
Sun Mar 03, 2019 7:07 am
Forum: Zero Order Reactions
Topic: 7th editon 7A.3 Example
Replies: 1
Views: 114

### 7th editon 7A.3 Example

Why does the book multiply the concentrations by 10 in the answer?
Fri Feb 22, 2019 11:11 am
Forum: Balancing Redox Reactions
Topic: 7th edition 6L.7, Adams, Disc 1A
Replies: 2
Views: 152

### 7th edition 6L.7, Adams, Disc 1A

For part c, where does the KOH come from in the answer?
Fri Feb 22, 2019 11:09 am
Forum: Balancing Redox Reactions
Topic: Moles of Charges, Adams, Disc 1a
Replies: 2
Views: 128

### Moles of Charges, Adams, Disc 1a

How would I find moles of electrons as they change each time?
Fri Feb 22, 2019 10:56 am
Forum: Balancing Redox Reactions
Replies: 3
Views: 112

Fri Feb 08, 2019 9:25 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: Calculating W
Replies: 1
Views: 107

### Calculating W

For BF3, would the degeneracy be at 1, because we can't tell if it would rotate, where as for BF2Cl it would be much higher as we could tell if it rotates with the Cl?
Fri Feb 08, 2019 9:21 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: 6th edition 8.57
Replies: 1
Views: 86

### 6th edition 8.57

How would I know that the reactions combust without it telling me so that I can use Hess's method?
Fri Feb 08, 2019 9:19 pm
Forum: Calculating Work of Expansion
Topic: Heat Capacity at constant Volume Pressure?
Replies: 2
Views: 105

### Heat Capacity at constant Volume Pressure?

Will we have to know how to calculate Heat Capacity at constant Volume and Pressure
Fri Jan 25, 2019 5:25 pm
Forum: Phase Changes & Related Calculations
Topic: Calculations for phase changes Adams Disc 1A
Replies: 2
Views: 93

### Calculations for phase changes Adams Disc 1A

For all the equations, to relate heat, work, and change in enthalpy, will we be given those on the test, or will we just have to know them, or is there a simpler way of knowing them?
Fri Jan 25, 2019 5:23 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Energy of raising water temp, Adams Disc 1A
Replies: 1
Views: 77

### Energy of raising water temp, Adams Disc 1A

For the table of raising water temp, will that be given on the test, or will we have to memorize it?
Fri Jan 25, 2019 5:22 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Replies: 2
Views: 94

For all the specific equations the books gives us, will we be told about the equations that we need to use? I see that a few are on the constants and equations worksheet, but how will we know what all the specifics heat in moles and all that will be?
Thu Jan 17, 2019 4:52 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: 6B.11 Part B Question
Replies: 1
Views: 100

### 6B.11 Part B Question

It asks for the mass of Na2O added to the first flask, and I looked up the answer in the book as I was confused and I have no idea why the book has the answer: Question: Added Na2o to a volumetric flask of volume 200 mL, filled w/ water resulting in 200 mL of NaOH solution. 5mL of solution transferr...
Thu Jan 17, 2019 4:47 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: How to tell if a chemical is an acid or base?
Replies: 4
Views: 251

### How to tell if a chemical is an acid or base?

I was wondering if there was a way to tell if a certain chemical will turn into an acid or base without some other information?
Like in question 6b.5, how would I know what HBr, HNO3, or HClO would be?
Wed Jan 09, 2019 9:19 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Chemical Equilibrium Part 2 Question 24
Replies: 2
Views: 76

### Chemical Equilibrium Part 2 Question 24

On this particular question, I am extremely confused about the 65 bars measurement, and how to begin the calculation for Q, any help would be appreciated.
Wed Jan 09, 2019 9:14 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Lecture Example of Calculating the equilibrium composition
Replies: 2
Views: 95

### Lecture Example of Calculating the equilibrium composition

From the example from the lecture on 1-9-18 about calculating the equilibrium composition using the ice table, I am still a bit confused on why there was the subtraction of the 8.434x10^-3, on the ATP side, and the addition of it on the ADP side to get the answer. May someone please clarify this par...
Wed Jan 09, 2019 9:10 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Chemical Equilibrium Part 2 Question 19
Replies: 2
Views: 104

### Chemical Equilibrium Part 2 Question 19

On this particular question which asks "Calculate the reaction quotient Qc, from the following equilibrium data collected in a 3 L sealed reaction vessel for the reaction AsH3(g) = As(s) + H2(g) AsH3= 5.55x10^-4 mol, As= 3.31 x 10^-3 mol, H2= 1.23 x10^-3 mole - No matter how I divide it after I...