Search found 9 matches

by Muhammad A Nasir
Sun Mar 19, 2017 3:24 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Winter 2016 Q3C (p.207)
Replies: 3
Views: 416

Re: Winter 2016 Q3C (p.207)

First the conventional way of writing the cell diagram is Reactant, Product, Reactant, Product etc. The reason AgBr(s) is in the diagram is because it is solid and Ag+ has been oxidized and that is why it is to included in the diagram. It is actually supposed to be the whole solid rather than the di...
by Muhammad A Nasir
Sun Mar 19, 2017 3:18 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Winter 2014 Final Q3
Replies: 1
Views: 259

Re: Winter 2014 Final Q3

Well we can't really determine which substances to use because no sort of equations are given. So the technique is to look at the next part which is part C and figure out which chemicals to use as cathode and anode because the equation are given in that part. Hopefully that helps.
by Muhammad A Nasir
Sun Mar 19, 2017 3:10 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Question 3A of Winter 2014 Practice Final
Replies: 2
Views: 282

Re: Question 3A of Winter 2014 Practice Final

Though copper is a good conductor of electricity it is not wise to pick copper because it has more than one charge. (Also a lot of these have more than one charge, but they are actually good for cell diagrams, whereas copper is not because it can't be used in redo half reaction.
by Muhammad A Nasir
Sun Mar 05, 2017 11:27 pm
Forum: *Cycloalkenes
Topic: Benzene
Replies: 2
Views: 302

Re: Benzene

I think we should expect benzene to be a part of quiz 3 because it is very important part if different chemical processes and it is a widely used industrial chemical. Well benzene and cyclobenzne are the same thing so I do not think that you will have to label them because I am sure that this is alr...
by Muhammad A Nasir
Sun Feb 12, 2017 11:44 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Midterm 2013 Question 3A
Replies: 4
Views: 490

Re: Midterm 2013 Question 3A

Where the heating of water is written as q_boiling = m_water * deltaH_vap, is important because we are told to find the mass of water heated and converted to steam and steam is phase change of liquid to gas or change in enthalpy of vaporization. Also we can't multiply by mass of water because we are...
by Muhammad A Nasir
Sun Feb 05, 2017 11:54 pm
Forum: Van't Hoff Equation
Topic: La Chatelier's Principle
Replies: 3
Views: 476

Re: La Chatelier's Principle

It has to do with equilibrium being altered. Also the theoretical bases of dependance of K temperature in Le Chataleir's Principle is given by Van't Hoff Equation.
by Muhammad A Nasir
Sun Feb 05, 2017 11:50 pm
Forum: Phase Changes & Related Calculations
Topic: Random question
Replies: 3
Views: 502

Re: Random question

Yea as everyone said that it usually depends on what you are working with. Chemical reactions actually can be partially negative.
by Muhammad A Nasir
Sun Jan 29, 2017 10:40 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Hess's Law
Replies: 4
Views: 541

Re: Hess's Law

Well there are many things we can do to approach Hess's Law. First I would make sure to see that the equations are balanced because one might never know that the equations are balanced and you need to multiply the change in enthalpy by that coefficient. Also this isn't true for every situation but w...
by Muhammad A Nasir
Sun Jan 15, 2017 8:59 pm
Forum: Phase Changes & Related Calculations
Topic: Other examples of elements which go through sublimation
Replies: 4
Views: 1021

Re: Other examples of elements which go through sublimation

Hello, There are many other elements and molecules that go through sublimation. One interesting element that sublimates is Arsenic. Because Arsenic does not melt at a normal pressure it sublimates instead. One interesting fact is that if one puts an Arsenic crystal in a test tube, they can see the g...

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