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31
High School Chemistry Forum / Re: Crystalizing Ammonium Nitrate
« Last post by Borek on March 23, 2025, 12:14:01 PM »
Not the safest compound to work with.

What you got is probably a solid mixture of non-stoichiometric hydrates, some compounds can solidify this way instead of producing nice crystals. Check if slowing down the cooling process won't help, or if adding a crystal to the saturated solution (so called inoculation) won't start the crystallization.

And google for "growing crystals", there are some general guidelines that should help.
32
High School Chemistry Forum / IUPAC name (cycloalkene)
« Last post by ve_90 on March 23, 2025, 11:58:58 AM »
According to IUPAC nomenclature, following the official rules, is the correct name of this cycloalkene: 3-chloro-4-methyl-1-cyclohexene or 3-chloro-4-methylcyclohexene? In other words, should the position of the double bond always be specified, or can it be omitted since the position of the double bond is implicit in the name and can be inferred from the positions of the substituents we indicate?
33
High School Chemistry Forum / Re: Crystalizing Ammonium Nitrate
« Last post by marquis on March 23, 2025, 10:14:55 AM »
If you have a thermometer, try putting the thermometer in water and then adding the ammonium nitrate.  Record the initial temp and then see how it changes.  If your ammonium nitrate is good, the temp should go down.  Then you are good to go.  Try and keep the amount of water relatively small.

Many try and purify ammonium nitrate for other purposes.  Can't help you there.
34
High School Chemistry Forum / Crystalizing Ammonium Nitrate
« Last post by Working_Mud7894 on March 23, 2025, 10:00:34 AM »
Trying to generate pure Ammonium Nitrate for a school project. I want to use the crystals in an endothermic reaction/


1. Dissolved the ammonium nitrate fertilizer in water
2. Filtered out impurities
3. Boiled n stove to remove excess water
4. Let it cool

I get a white solid disc. Did not crystalize. Not sure I can use this for an endothermic reaction. What am I doing wrong?

Thank you


35
Organic Chemistry Forum / Feasibility of other products from this reaction?
« Last post by RandurnerHL8 on March 21, 2025, 07:46:07 PM »
I ran across this reaction in my homework and while I don’t have any specific homework questions, I just generally want to ask about the feasibility of this reaction and other products (for use in a different context).

Main questions:
Is it possible that this forms a five-membered ring? If so is it more likely to form than what the problem shows?
Is this something that was purely made up for homework or is a realistic intramolecular reaction?

I think I also generally had a question about if there was a good way to convert structures to IUPAC names but that’s more of a secondary question to this one.

Thank you to those who reply and satisfying my curiosity!
36
Organic Chemistry Forum / Re: Naming and Numbering Zaleplon
« Last post by Hunter2 on March 21, 2025, 11:00:00 AM »
IUPAC Name is

N-[3-(3-cyanopyrazolo[1,5-a]pyrimidin-7-yl)phenyl]-N-ethylacetamide
The numbering at a gives lower number, because N-N is the shortest.
37
Organic Chemistry Forum / Naming and Numbering Zaleplon
« Last post by batuhan on March 21, 2025, 09:59:07 AM »
so i have question about numbering fused ring why did we start with A on intersecting wall instead of B. Wouldnt it be more accurate to start lettering from the Nitrogen at the top
38
Organic Chemistry Forum / Re: Addition of HCl to 2-methyl-1,3-cyclohexadiene
« Last post by ve_90 on March 19, 2025, 12:33:28 PM »
Can’t anyone help me?
39
High School Chemistry Forum / MOVED: Addition of HCl to 2-methyl-1,3-cyclohexadiene
« Last post by Borek on March 18, 2025, 03:10:03 PM »
This topic has been moved to Organic Chemistry Forum.

https://www.chemicalforums.com/index.php?topic=117527.0
40
Organic Chemistry Forum / Addition of HCl to 2-methyl-1,3-cyclohexadiene
« Last post by ve_90 on March 18, 2025, 12:52:23 PM »
1) I add the proton to the C1-C2 double bond: I obtain a tertiary allylic carbocation and a secondary carbocation.
2) I add the proton to the C3-C4 double bond: I obtain a secondary carbocation and a secondary allylic carbocation.
3) The chloride ion bonds to the tertiary allylic carbocations stabilized by resonance from point 1: I obtain 3-chloro-3-methylcyclohexene and 3-chloro-1-methylcyclohexene.
These are the 1,2- and 1,4-addition products (can someone help me understand how I can distinguish them in this way?).
4) The chloride ion bonds to the secondary allylic carbocations stabilized by resonance from point 2: I obtain 6-chloro-1-methylcyclohexene (Is this the correct IUPAC name?). What type of products are these? 1,2 or 1,4?

I was also asked which of the four products are formed in the greatest quantity and why. I believe that 3-chloro-3-methylcyclohexene and 3-chloro-1-methylcyclohexene are formed in the greatest quantity because they are produced through the most stable intermediates. Am I correct? Do the other products not form at all, or do they form in larger quantities?

I really appreciate all the responses, they were very helpful! Thanks for your support!
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