Attached is the image of the desired structure, my question is based on what is pictured as (CH3)2HC- I represented this group as C3H7 which does seem like the logical equivalent, but just being safe here. Am I right?
Aah Borek! My old friend! ;)
Well I know the logic doesn't apply because the answer book says it doesn't but the first para answered by question. However this is so silly because I cannot tell with any certainty which rule I should follow when!?
Data for Question B:
(initial)[CH3COOH] = 0.500 mol dm–3 and) eqm [CH3COOH] = 0.200 mol dm–3;
(initial)[CH3COO–] = 0.300 mol dm–3 and) eqm [CH3COO–] = 0.300 mol dm–3;
The Attempt at a Solution
Question A) " FInd the pH of a mixture of 50.0 cm3 of 0.100 mol...
Sorry, before I go ahead, Is the reaction reversible? I seem to have made a stupid assumption that I can talk about the equilibrium shifting to remove excess reactants when it mayn't be a reversible reaction. How do I know if it is one? THanks Borek
Hi So the reaction is below:
Sodium thiosulfate + HCl = Sulfur + NaCl+ Water+ SO2
So if I wanted to say 'Increasing the conc. of Sodium thiosulfate has shifted the equilibrium to the left (reactants) and thus the system works to break down excess reactants and create more product by...
Talk about luck haha! My mum's been teaching german for 15 years, however, A complexing agent I did come across was zincon, which was holy costly!! Yes, so sorry for the late up date. But I'm going with AAS since I can't find a complexing agent other than zincon for zinc.
Urgent: Some complexing agents for zinc.
Hi, I am to extract Zinc from plant tissue, with 0.1N HCl. But since its colorless I cannot determine the concentration(using the colorimeter) of zinc without adding a chemical that forms a complex with zinc and has a color.
How would you extract zinc from a plant?
So I basically need to find out how I'm supposed to extract zinc from a plant and its methodology and chemicals required. How do I do this? I found one article that is rather incomplete, it just says zinc was extracted using 0.1N HCl and not...
Well, turns out I won't need to flip the sign. However I have hardly varied my independant variable hence I must perform the experiment with 0.025 M, 0.05M, 0.1M, 0.2M, 0.4M masses of the chemicals. That will indicate efficiency in a better manner, you know may be I could calculate the average...
I hope I can drop the formality. But Dude! measuring the initial temperature would mean measuring the temperature of water at room temperature?
Oh and I was told I had the wrong answer because 0.025 mols does NOT represent 1 mol obviously and so my units in actuality weren't kJ/mol but...
Hmm, I think I went wrong when I was told to take 0.025 moles and 50 cm3 without any damn reason. Okay, I measured the temperatures only after I added water, that's the reason the values are negative. but in that case the enthalpy won't be negative when it IS an exothermic reaction.
Okay my bad, first off can you suggest how you would carry out this experiment?
Here are the reactions for the hydration of CuSO4:
1)CuSO4(s) + Aq -----> CuSO4(aq) ∆H reaction What I got for ∆H reaction= -2kJ/mol Theoretical: -66.5 kJ/mol
2)CuSO4(s) -----> CuSO4.5H20(s) ∆H reaction...
Hi! Thanks for your interest in this this post :D!
So two reactions I performed were: A) Adding 50 cm3 water to 0.025 moles CuS04 and measuring ΔT.
B) Adding 50 cm3 water to 0.025 moles CuS04.5H2O and measuring ΔT.
Well turns out the calculations were wrong, since I apparently didn't get...
1. Research Question: How effectively can experimental values estimate the heat of hydration of Copper (II) Sulfate as compared to theoretical values found using Hess’s law?
3. In the image above I have ΔH20 and ΔHreaction(not labelled) and intend to experimentally find out ΔH...
I appreciate both the reply, but sadly I don't understand either, could you address the question directly without jumping into other complicated things! Thanks, I'm truly sorry for the inconvenience. :)
Well all textbooks probably state something like this 'A Nucleus loses energy by radiation'
I'm cool with that statement except the fact that all the excess BE or energy is lost only to the eg.alpha particle! and no mention of some being given to the new nucleus!
Look at this for example:
Yeah I think I got it guys! sambristol's reply hold true for me, since I'm not studying too hi-fi physics, but it is right, right?
"to go to a higher BE(binding energy) an atom has to lose enrgy'' now it makes sense since, as higher BE is actually more negative! :D
PLEASE tell me if I'm right...
Can someone explain this excerpt from my textbook please?
"IF nucleus A was made from its constituents (Binding energy) and it released 400MeV, but making nucleus B(product) releases 405MeV. Therefore if A changes to B, 5 MeV of energy must be released. This excess energy is given to the...
(NOT HOMEWORK)Hey guys the question in the text book goes like this:
Q) It is found that alpha particles with a KE of 7.7MeV bounce back off an aluminium target. If the charge of an aluminium nucleus is +2.1*10^-18C, calculate the velocity of the alpha particles(mass 6.7*10^-27kg)...
What is Q in kQq/r ??
Hey guys the textbook says Q is (+Ze) and q is (+2e) the later is 2 times the positive equivalent of an electron's charge. Though the former I'm unable to make any sense of, what is Ze??