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chem: fix some incorrect statements

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eggy 2023-04-09 22:58:57 -04:00
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docs/g12/snc4mz.md
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@ -59,8 +59,7 @@ These only contain carbon and hydrogen.
The lack of standardisation prior to IUPAC means that some IUPAC names have common names that are still widely used today. The lack of standardisation prior to IUPAC means that some IUPAC names have common names that are still widely used today.
- acetylene: **ethyne** - acetylene: **ethyne**
- vinyl: **propene** - vinyl / ethylene: **ethene**
- ethylene: **ethene**
The general formula for an **acyclic** hydrocarbon with no rings is as follows, where $n$ is the number of carbon atoms, $x$ is the number of double bonds, and $y$ is the number of triple bonds. The general formula for an **acyclic** hydrocarbon with no rings is as follows, where $n$ is the number of carbon atoms, $x$ is the number of double bonds, and $y$ is the number of triple bonds.
$$\ce{C_nH_{2n+2-2x-4y}}$$ $$\ce{C_nH_{2n+2-2x-4y}}$$
@ -504,7 +503,7 @@ An aldehyde is named like an alcohol but has a higher naming priority, with a su
<img src="/resources/images/alcohol-aldehyde.png" width=900>(Source: Kognity)</img> <img src="/resources/images/alcohol-aldehyde.png" width=900>(Source: Kognity)</img>
Aldehydes will continue to react to ketones if the oxidising agent is not limited. To prevent this, the aldehyde is separated and removed from the mixture through distillation. Aldehydes will continue to react to carboxylic acids if the oxidising agent is not limited. To prevent this, the aldehyde is separated and removed from the mixture through distillation.
<img src="/resources/images/aldehyde-distillation.png" width=900>(Source: Kognity)</img> <img src="/resources/images/aldehyde-distillation.png" width=900>(Source: Kognity)</img>
@ -800,7 +799,7 @@ If there are multiple E/Z isomers, they are separated by commas and numbered acc
Optical isomers are mirrored across the y-axis with the same compounds put on the same bonds. **Four distinct groups** must be attached to the central carbon atom to have optical isomers. Optical isomers are mirrored across the y-axis with the same compounds put on the same bonds. **Four distinct groups** must be attached to the central carbon atom to have optical isomers.
In the data booklet, all amino acids are chiral except for glyine and proline. In the data booklet, all amino acids are chiral except for glycine and proline.
!!! example !!! example
<img src="/resources/images/enantiomer.ex.png" width=700>(Source: Kognity)</img> <img src="/resources/images/enantiomer.ex.png" width=700>(Source: Kognity)</img>