Learn how to use the mhchem in JJ-Classroom. Start every Chemical expression with \(\ce{ and end with }\).
List of mhchem example expressions and result of the expressions.
To test any example, copy it into the text input field above, start every Chemical expression with \(\ce{ and end with }\)
Note that these expressions also work on the JJ-Classroom's Chat Interface.
Check mhchem source page for a more comprehensive list of examples and explanations.
| Example | Result |
|---|---|
| Chemical Equations | |
| CO2 + C -> 2 CO | \(\ce{ CO2 + C -> 2 CO }\) |
| Hg^2+ ->[I-] HgI2 ->[I-] [Hg^{II}I4]^2- | \(\ce{ Hg^2+ ->[I-] HgI2 ->[I-] [Hg^{II}I4]^2- }\) |
| Chemical Formulae | |
| H2O | \(\ce{ H2O }\) |
| Sb2O3 | \(\ce{ Sb2O3 }\) |
| Charges | |
| H+ | \(\ce{ H+ }\) |
| CrO4^2- | \(\ce{ CrO4^2- }\) |
| [AgCl2]- | \(\ce{ [AgCl2]- }\) |
| Y^99+ | \(\ce{ Y^99+ }\) |
| Stoichiometric Numbers | |
| 2 H2O | \(\ce{ 2 H2O }\) |
| 0.5 H2O | \(\ce{ 0.5 H2O }\) |
| 1/2 H2O | \(\ce{ 1/2 H2O }\) |
| (1/2) H2O | \(\ce{ (1/2) H2O }\) |
| $n$ H2O | \(\ce{ $n$ H2O }\) |
| Isotopes | |
| ^{227}_{90}Th+ | \(\ce{ ^{227}_{90}Th+ }\) |
| ^0_-1n- | \(\ce{ ^0_-1n- }\) |
| ^{0}_{-1}n^{-} | \(\ce{ ^{0}_{-1}n^{-} }\) |
| H^{3}HO | \(\ce{ H^{3}HO }\) |
| Reaction Arrows | |
| A -> B | \(\ce{ A -> B }\) |
| A <- B | \(\ce{ A <- B }\) |
| A <-> B | \(\ce{ A <-> B }\) |
| A <--> B | \(\ce{ A <--> B }\) |
| A <=> B | \(\ce{ A <=> B }\) |
| A <=>> B | \(\ce{ A <=>> B }\) |
| A <<=> B | \(\ce{ A <<=> B }\) |
| A ->[H2O] B | \(\ce{ A ->[H2O] B }\) |
| A ->[{text above}][{text below}] B | \(\ce{ A ->[{text above}][{text below}] B }\) |
| A ->[x][x_i] B | \(\ce{ A ->[x][x_i] B }\) |
| States of Aggregation | |
| H2(aq) | \(\ce{ H2(aq) }\) |
| CO3^2-_{(aq)} | \(\ce{ CO3^2-_{(aq)} }\) |
| NaOH(aq,\infty) | \(\ce{ NaOH(aq,\infty) }\) |
| Crystal Systems | |
| ZnS($c$) | \(\ce{ ZnS($c$) }\) |
| Bonds | |
| C6H5-CHO | \(\ce{ C6H5-CHO }\) |
| A-B=C#D | \(\ce{ A-B=C#D }\) |
| A\bond{-}B\bond{=}C\bond{#}D | \(\ce{ A\bond{-}B\bond{=}C\bond{#}D }\) |
| A\bond{-}B\bond{=}C\bond{#}D | \(\ce{ A\bond{-}B\bond{=}C\bond{#}D }\) |
| A\bond{~}B\bond{~-}C | \(\ce{ A\bond{~}B\bond{~-}C }\) |
| A\bond{~--}B\bond{~=}C\bond{-~-}D | \(\ce{ A\bond{~--}B\bond{~=}C\bond{-~-}D }\) |
| A\bond{...}B\bond{....}C | \(\ce{ A\bond{...}B\bond{....}C }\) |
| A\bond{->}B\bond{<-}C | \(\ce{ A\bond{->}B\bond{<-}C }\) |
| Addition Compounds | |
| KCr(SO4)2*12H2O | \(\ce{ KCr(SO4)2*12H2O }\) |
| KCr(SO4)2.12H2O | \(\ce{ KCr(SO4)2.12H2O }\) |
| Oxidation States | |
| Fe^{II}Fe^{III}2O4 | \(\ce{ Fe^{II}Fe^{III}2O4 }\) |
| Unpaired Electrons, Radical Dots | |
| OCO^{.-} | \(\ce{ OCO^{.-} }\) |
| NO^{(2.)-} | \(\ce{ NO^{(2.)-} }\) |
| Kroger-Vink Notations | |
| Li^x_{Li,1-2x}Mg^._{Li,x}$V$'_{Li,x}Cl^x_{Cl} | \(\ce{ Li^x_{Li,1-2x}Mg^._{Li,x}$V$'_{Li,x}Cl^x_{Cl} }\) |
| O''_{i,x} | \(\ce{ O''_{i,x} }\) |
| M^{..}_i | \(\ce{ M^{..}_i }\) |
| $V$^{4'}_{Ti} | \(\ce{ $V$^{4'}_{Ti} }\) |
| V_{V,1}C_{C,0.8}$V$_{C,0.2} | \(\ce{ V_{V,1}C_{C,0.8}$V$_{C,0.2} }\) |
| Equation Operators | |
| A + B | \(\ce{ A + B }\) |
| A - B | \(\ce{ A - B }\) |
| A = B | \(\ce{ A = B }\) |
| A \pm B | \(\ce{ A \pm B }\) |
| Precipitate and Gas | |
| SO4^2- + Ba^2+ -> BaSO4 v | \(\ce{ SO4^2- + Ba^2+ -> BaSO4 v }\) |
| A v B (v) -> B ^ B (^) | \(\ce{ A v B (v) -> B ^ B (^) }\) |
| Other Symbols and Shortcuts | |
| NO^* | \(\ce{ NO^* }\) |
| 1s^2-N | \(\ce{ 1s^2-N }\) |
| n-Pr | \(\ce{ n-Pr }\) |
| iPr | \(\ce{ iPr }\) |
| A, B, C; F | \(\ce{ A, B, C; F }\) |
| Complex Examples | |
| Zn^2+ <=>[+ 2OH-][+ 2H+] $\underset{\text{amphoteres Hydroxid}}{\ce{Zn(OH)2 v}}$ <=>[+ 2OH-][+ 2H+] $\underset{\text{Hydroxozikat}}{\ce{[Zn(OH)4]^2-}}$ | \(\ce{ Zn^2+ <=>[+ 2OH-][+ 2H+] $\underset{\text{amphoteres Hydroxid}}{\ce{Zn(OH)2 v}}$ <=>[+ 2OH-][+ 2H+] $\underset{\text{Hydroxozikat}}{\ce{[Zn(OH)4]^2-}}$ }\) |
| $K = \frac{[\ce{Hg^2+}][\ce{Hg}]}{[\ce{Hg2^2+}]}$ | \(\ce{ $K = \frac{[\ce{Hg^2+}][\ce{Hg}]}{[\ce{Hg2^2+}]}$ }\) |
| $K = \ce{\frac{[Hg^2+][Hg]}{[Hg2^2+]}}$ | \(\ce{ $K = \ce{\frac{[Hg^2+][Hg]}{[Hg2^2+]}}$ }\) |
| Hg^2+ ->[I-] $\underset{\mathrm{red}}{\ce{HgI2}}$ ->[I-] $\underset{\mathrm{red}}{\ce{[Hg^{II}I4]^2-}}$ | \(\ce{ Hg^2+ ->[I-] $\underset{\mathrm{red}}{\ce{HgI2}}$ ->[I-] $\underset{\mathrm{red}}{\ce{[Hg^{II}I4]^2-}}$ }\) |
| Physical Units | |
| 123 kJ | \(\ce{ 123 kJ }\) |
| 123 mm2 | \(\ce{ 123 mm2 }\) |
| 123 J s | \(\ce{ 123 J s }\) |
| 123 J*s | \(\ce{ 123 J*s }\) |
| 123 kJ/mol | \(\ce{ 123 kJ/mol }\) |
| 123 kJ//mol | \(\ce{ 123 kJ//mol }\) |
| 123 kJ mol-1 | \(\ce{ 123 kJ mol-1 }\) |
| 123 kJ*mol-1 | \(\ce{ 123 kJ*mol-1 }\) |
| 1.2e3 kJ | \(\ce{ 1.2e3 kJ }\) |
| 1,2e3 kJ | \(\ce{ 1,2e3 kJ }\) |
| 1.2E3 kJ | \(\ce{ 1.2E3 kJ }\) |
| 1,2E3 kJ | \(\ce{ 1,2E3 kJ }\) |