I posted a homework problem I'm struggling with in files, it is called hw.jpg. I think the compound is aromatic or has a high degree of conjugation based on...
Morning All, Did I read correctly that lead (ii) are covalent? The evidence being? No, I must have misread. Mustn't I? I knew that I should have played...
Hello Maria, Hope things are going fine with you, based on the data you have provided ( I didn't have a look at the UV Spec though ), I think you should have a...
2 SO2 + O2 ----- 2 So3 delta H= -196kJ 2 So2 + 3 O2 ---- 2 So3 delta H = -790kJ What is the delta H for the reaction 2 + O2----SO2? Ok, the answer is...
rt, Sorry, do you mean how do you calculate the enthalpy of combustion of rhombic sulphur? If the answer is yes, then you are not given enough information....
rt, Great question. The reaction that you are interested in is S2 + O2 => SO2. Note that the SO2 is a reactant in your first reaction, so it has to be written...
If you're going to send something about the S-SO2-SO3 thermochemistry question, Yahoo groups doesn't accept attachments. You could put it in the files, then...
Thanks, that answer was very helpful. I hope my questions aren't too simple - I really am trying to learn and I do this on my own in my spare time. I have a...
Hi Group Am from the US. During school when I was in back in the 80's they were not teaching the metric system at all in the school I went to unknow if this...
Hello TIA, Fortunately, the US government has spent time on developing material that should be very helpful to you. There are several website addresses listed...
Hi, I would like to share two very silly questions those I have in my mind since long time back and never got a satisfactory answer. Hope you might help. 1> We...
KBr is more soluble in water than NaCl, 104 parts of KBr being soluble in 100 parts of H2O at 100șC, compared to 39.8 parts of NaCl. (See e.g. Perrys Chemical...
According to the theory represented by the Arrhenius equation, in which rate constant for a reaction varies with temperature according to k = Aexp(-E/RT),...
Thanks and we'll see if these government sites are really that good LOL Heck one of my other hobbies is a political activist so... ;o) ... From: Nathan Haese ...
Pardon: Your questions are not silly. I myself do not know the answers. Please be assured that John does not know the answers either, despite wrapping himself...
Yes, The only dumb question is the one that does not get asked. Philip ... From: Nathan Haese [mailto:nathanhaese@...] Sent: 02 March 2004 18:41 To:...
Dear Steve, Sorry, have not got a clue either. I cannot remember my undergraduate studies at all. If I learnt anything it was knowing where to look for...
Thanks for the idea of occupying ALL water molecules for solvation of NaCl at the point of saturation. But, I need some quantitative treatment. How many water...
It doesn't address my question at all !!! I was not bothered about the temp dependence of rate of a reaction. All I wanted know is that, if activation energies...
... $$$$$$$$$$$$$$ I think if we know the equilibrium constant, then we can anytime calculate how much K2CO3 or NaCl is necessary to obtain some fixed amount...
Sorry Suman, please speak slowly as I am naturally blond (no really!) but I thought we could assume that enthalpy changes are temperature independent. I know...
Please refer to KL Kapoor P.Chem. Vol IV for the answer to your Activation Energy qs. It interpretes Activation Energy as the difference between the Minimum...
... $$$$$$$$$$$$$$ Thanks, but sorry that I don't have that particular book with me right now. May be yes, we need to modify the definition of activation...
Suman you can find the book in SB's lab (Org.Chem). There refer to collision theory and Arr. Equation, you'll get your answer. ~Sourav ... higher ... extend ...
Suman if I put it this way: Your qs. involves enthalpy and Ea. Ea inherently is NOT temperature dependent, how? Consider to start from and end to Absolute Zero...
Suman one more thing you can do, you can look up an old issue of Resonance where Pushpendu Sir had written a fine article. Please search in Google. It's...
Hello group, I know that there are many ways to produce acetonitrile, one of these ways is the catalytic synthesis by ammonolysis. I don't find many...
... ************* I'm still a little confused regarding the actual definitions. What is the activation energy at say room temperature ? Can we describe room...
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