Timeline for Energy in chemical reactions [closed]
Current License: CC BY-SA 4.0
19 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 31, 2020 at 22:16 | history | closed |
Mithoron Mathew Mahindaratne user55119 Poutnik Todd Minehardt |
Needs details or clarity | |
| Jan 30, 2020 at 2:00 | review | Close votes | |||
| Jan 31, 2020 at 22:16 | |||||
| Jan 29, 2020 at 22:36 | comment | added | Karl | That´s it. Just as a side note: You should demand that your teacher thoroughly explains such basic principles. It has been shown again and again that letting students put together things on their own only works if they have already internalised the basics. You and perhaps two others of your class have got it now, the rest has likely given up about chemistry for good, like so many before them. | |
| Jan 29, 2020 at 22:12 | comment | added | Melvin | @Karl so, Mg + 2H+ + 2Cl- —> Mg2+ + 2Cl- + H2. So what you mean is that the chloride ions remain unchanged but the magnesium gives away two electrons, supposedly to the hydrogen? :) | |
| Jan 29, 2020 at 22:09 | comment | added | Karl | Very good, go on! Write down the equation in full, then strike out what is the same on both sides. | |
| Jan 29, 2020 at 22:07 | comment | added | Melvin | @Karl Um, I can always write (aq) after the hydrochloric acid and the magnesium chloride, but that seems like cheating :) the hydrochloric acid could be written as H+ + Cl- and the magnesium chloride as Mg2+ + 2Cl- | |
| Jan 29, 2020 at 22:06 | answer | added | Maurice | timeline score: 0 | |
| Jan 29, 2020 at 22:04 | comment | added | Karl | Aha! But that equation is not really what you did, because the whole thing was in aqueous solution. Can you change your equation to reflect that? And then, second step, simplify your equation? | |
| Jan 29, 2020 at 22:01 | comment | added | Melvin | @Karl Problem is I don’t know what it would translate to. I am 15 years old but I’m very interested so I like stuff quite advanced :) | |
| Jan 29, 2020 at 22:00 | comment | added | Karl | "Class" and "student" are equally widely interpretable. ;) | |
| Jan 29, 2020 at 21:59 | comment | added | Melvin | @Karl The total reaction formula would be: Mg + 2HCl —> MgCl2 + H2, so hydrogen gas | |
| Jan 29, 2020 at 21:58 | comment | added | Karl | Magnesium chloride (dissolved) is one thing, and the chloride was there before. What else do you get? | |
| Jan 29, 2020 at 21:57 | history | edited | Melvin | CC BY-SA 4.0 |
added 11 characters in body
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| Jan 29, 2020 at 21:57 | comment | added | Melvin | @Karl just realized working could be interpreted as a lot of stuff, forgot to mention that it was in a class :P | |
| Jan 29, 2020 at 21:56 | comment | added | Melvin | @Karl Yeah, you get magnesium chloride :) what I’m trying to get at is if this reaction occurs a certain way, I.e. if the electrons are transferred in a certain way because it would take less energy? :) | |
| Jan 29, 2020 at 21:54 | comment | added | Melvin | @Karl I’m a Swedish student so I’m not sure how advanced this is in terms of other courses. We are learning about salts and stuff and this is about a lab we did where we were gonna write a conclusion. Thing is, I’m quite interested in science so that takes me quite some way above what’s needed for this class, I’m just curious :) | |
| Jan 29, 2020 at 21:44 | comment | added | Karl | (Can you tell under what context you are "working" with this reaction? It is far easier to give answers if one knows a bit about the background of the audience.) | |
| Jan 29, 2020 at 21:39 | comment | added | Karl | If you dissolve a base metal in an acid, what do you get? (Hint: Chloride ions have an "octet" electron configuration.) | |
| Jan 29, 2020 at 20:50 | history | asked | Melvin | CC BY-SA 4.0 |