CHEMISTRY COMMUNITY

VivianaHF2L

Why is Specific Heat Capacity an extensive property if it pertains to that individual reaction? Meanwhile heat capacity is an intensive property even though it constantly changes with matter?

VivianaHF2L

For example on problem 49 on edition 6, each step has it's own molecularity and order. Step 1 is just taking the reactants HBr and NO2 and multiplying them. Each one has a coefficient of 1 and so individually they have an order of one. However, when added k[HBr][NO2] the order becomes two. This infl...

VivianaHF2L

You would still have to find the overall order but they are based on the orders taken from each elementary step.

VivianaHF2L

The molecularity would be the same as the overall order.

VivianaHF2L

Why is the order one and not two if the overall equation had a coefficient of two?

VivianaHF2L

In the 6th edition textbook, there is a table that describes all three orders but on the bottom of zero and second order the half life states not used. What does this mean?

VivianaHF2L

K' is for the reverse reaction. Just a different direction but still the same concept.

VivianaHF2L

After finding the activation energy of the two different parts do we add them? If so why?

VivianaHF2L

The difference between the two is that a catalyst is there to begin with and does not get used up. Meanwhile the Intermediate gets formed between the steps of the reaction.

VivianaHF2L

This would be the molecule that you cancel out when combining step 1 and step two because an intermediate is formed.

VivianaHF2L

When finding seconds for problem 27 in edition 6 it was just finding 1/2^n. Does this change when it is no longer first order? For example in problem 35 edition 6 the same method no longer works? Is it because it is second order?

VivianaHF2L

When finding initial order for a second order equation which [A] do we use if the gave us H2 and I2?

VivianaHF2L

Theoretically, since both the graphs of both zero and one would look similar(including the negative in the equation) how do we distinguish them?

VivianaHF2L

They are written differently with zero order having moles first and second order having Liters first. Therefore, do they have different units so they must be written in this order or do they have the same regardless of the order?

VivianaHF2L

In the third question of the sixth edition book, it had three parts one asks for the reaction rate and the other two asks for the rate of formation. What is the difference between these two because the book does not really give an equation for the reaction rate just for the rate of formation.

VivianaHF2L

For part C what makes the equation non-spontaneous. Does the fact that it only have an anode make it non spontaneous or do we need to solve for deltaG to prove it? However if it is the latter, how do we go about finding the deltaG without the cathode?

VivianaHF2L

Just to clarify, when balancing an equation one must add H+ or water but never put coefficients in front of the oxidizing/reducing compound. OR can we do both?

VivianaHF2L

Just to clarify, when finding n for the equation deltaG=-nFE cell we must balance the equation and it is the coefficient for the electrons transferred?

VivianaHF2L

What is the difference between deltaG and deltaG with a degree? Like in problem 11.21.

VivianaHF2L

How does the entropy change in a liquid phase as opposed to a gas phase? Which one would have more entropy and why?

VivianaHF2L

How does the negative enthalpy help prove that most spontaneous reactions are exothermic. In other words what are the connections between them?

VivianaHF2L

SO does this mean that entropy change is the same thing as change in entropy?

VivianaHF2L

Is it always given? OR can it be solved for? If so what information is required to solve it?

VivianaHF2L

For problem 9.3 the formula for change in temperature is needed but how are we suppose to find Heat Capacity when the number of moles are not given? Without the moles the formula for solving C is not possible.

VivianaHF2L

I understand when to use each equation but the problem is not offering the number moles to solve a reversible equation. Is there a way to solve without the moles given?

VivianaHF2L

I do not understand how the inner diameter and the amount of depression helps us solve for the change in volume?

VivianaHF2L

Would a salt disassociate completely? Or only partially?
I do not really understand how that effects which molecules to include in the equilibrium equation?

VivianaHF2L

What is the difference between the two, in terms of comparing them if they have the same formula? What does the comparison entail?

VivianaHF2L

When do we know to change the X to zero so that we do not have to do the quadratic formula?
Does this change when there is now multiple reactions happening as in a solution that has a weak acid and salt that disassociates.

CHEMISTRY COMMUNITY

Search found 29 matches

Specific Heat Capacity and Heat Capacity

Re: Molecularity

Re: Molecularity

Re: Molecularity

Problem 51 6th Edition

Not used Half life

Re: k'

Problem 61 6th Edition

Catalyst vs Intermediate

Re: reaction intermediate

First Order vs Second Order Reaction Half- Life

Question 13 6th Edition

Differentiating Zero and One Order Reactions

Second and Zero Order Units

Reaction Rate vs Rate of Consumption/Formation

In the 6th Edition in Problem 14.23, Part C

Adding H+ and H2O

Finding n for Galvanic Cell Equations

Change in Gibbs Free Energy

Phase changes and Entropy

Gibs Free Energy and Enthalpy

Re: Entropy Change Due to Temperature Change

Re: 'C' constant

When C, Heat Capacity is not given?

Problem 8.27

Homework Problem 8.3 Question

Equations with Salt

The Difference between Q and Kc [ENDORSED]

An Equation with both Weak Acids and Salt