Recent content by Brimley

So I have J/(K mol) but when I calculated \Delta G I only had units of J/mol --> Wh/mol. Does this K get canceled out anywhere?

Hello niallj, I am unable to simplify that unit. I'm supposed to wind up in either Joules or Watt hours. Can you assist with the conversion process? I wiki'd Joule and Watt (and Watt Hours) for their equivalent units with no luck.

I lost track of my units, do you have any insite as to what units my \Delta S is in?

Okay, wait a minute - I found a hint in the text that says to utilize the derivative of deltaG = deltaH - T*deltaS \Delta G = \Delta H - T \Delta S d \Delta G/dT = - \Delta S d (nFE)/ dT = - \Delta S nF * dE/dT = - \Delta S 2(98485)(0.2*10^-3) = - \Delta S - \Delta S = -39.394...

I do not follow this logic. E is known Delta G is known Delta H and Delta S are functions of Delta G (Which is down). Why find another Delta G? You would find Delta G and Delta G whose delta (difference) seems to be irrelevant. Perhaps you can provide your proof?

I don't understand how I would attempt solving for deltaG again once I've already found it. All of its variables are known, so how can I deviate? Any advice on deltaS and deltaH ?

What do you mean by more values of deltaG ?

Hello All, I've been struggling to figure out how to solve for change of enthalpy and entropy. My reference text makes it look so easy but then gives an example where it provides totally different information. Here is the reference from the text: "A Lead Acid Battery's measurments were...

Okay, so if I'm understanding you correctly, all I need to do is the following: aCHCl3 = 34/143 = 0.2377 a(C2H5)2O = 196/397 = 0.4937 Is this correct? Are there any units? So was I correct to say that since the temperature at which these measurements were made was constant, that...

Hello Borek, in my first post I wrote the text above explaining my confusion. I don't know if the book gives more information than necessary in their example or not, but I don't see how the formula plugs and chugs for having different moles of each substance nor do I understand where temperature...

Hello everyone, I'm trying to understand more about how partial pressure works and how to use chemical activity equation. My reference text uses the following example: Note1: A solution is prepared by mixing 2 moles of CHCl3 (chloroform) and 3 moles of (C2H5)2O (diethyl ether). Note2: The...

Hello ch@rlatan, so in summary, would you say that ionic compounding is exothermic due to energy being emitted via the bonding process which entails kinesis and thus the conservation of energy states that this kinesis will change form to heat once the electrons have finished the kinetic...

Hello ch@rlatan and thank you for your response! Could you give more detail as to what you mean by lower/high energy state? What do you mean? I don't understand how the energy released relates to heat, as you said the difference between the electrons initial state and its resultant state...

Borek, could you perhaps elaborate more on this? I do not understand how the heat is generated during the ionic compounding.

Hello Borek! I really do not understand how the electrolysis of water works quite yet. I did some reading about it on Wikipedia: http://en.wikipedia.org/wiki/Electrolysis_of_water In my opinion, I think that confirms what I said in my past post that it could be multiple gases and I'm not sure...