化学

元素記号

He\ce{He}

$$ \ce{He} $$

OX2\ce{O2}

$$ \ce{O2} $$

HX2O\ce{H2O}

$$ \ce{H2O} $$

X13X2213C\ce{^{13}C}

$$ \ce{^{13}C} $$

X92238X2922238U\ce{^{238}_{92}U}

$$ \ce{^{238}_{92}U} $$

CuSOX45HX2O\ce{CuSO4. 5H2O}

$$ \ce{CuSO4. 5H2O} $$

12HX2O\ce{1/2 H2O}

$$ \ce{1/2 H2O} $$

(1/2)HX2O\ce{(1/2) H2O}

$$ \ce{(1/2) H2O} $$

NOX3X\ce{NO3-}

$$ \ce{NO3-} $$

SOX4X2\ce{SO4^2-}

$$ \ce{SO4^2-} $$

(CX2HX2)Xn\ce{(C2H2)_n}

$$ \ce{(C2H2)_n} $$

化学結合

CX6HX5OH\ce{C6H5-OH}

$$ \ce{C6H5-OH} $$

O=C=O\ce{O=C=O}

$$ \ce{O=C=O} $$

NN\ce{N#N}

$$ \ce{N#N} $$

HCCCH=CHCHX3+3HX2undefinedCHX3(CHX2)X3CHX3\ce{HC#C-CH=CH-CH3 + 3H2 -> CH3-(CH2)3-CH3}

$$ \ce{HC#C-CH=CH-CH3 + 3H2 -> CH3-(CH2)3-CH3} $$

化学反応の矢印

表示 入力

AundefinedB\ce{A -> B}

$\ce{A -> B}$

AundefinedB\ce{A <- B}

$\ce{A <- B}$

AundefinedB\ce{A <-> B}

$\ce{A <-> B}$

AundefinedB\ce{A <--> B}

$\ce{A <--> B}$

AundefinedB\ce{A <=> B}

$\ce{A <=> B}$

AundefinedB\ce{A <=>> B}

$\ce{A <=>> B}$

AundefinedB\ce{A <<=> B}

$\ce{A <<=> B}$

Aundefined加熱MnOX2B\ce{A ->[MnO2][加熱] B}

$\ce{A ->[MnO2][加熱] B}$

Aundefinedx molB\ce{A ->[x mol] B}

$\ce{A ->[x mol] B}$

Aundefined塩基性B\ce{A ->[][塩基性] B}

$\ce{A ->[][塩基性] B}$

化学反応式

COX2+Cundefined2CO\ce{CO2 + C -> 2 CO}

$$ \ce{CO2 + C -> 2 CO} $$

2HX2+OX2undefined2HX2O\ce{2H2 + O2 -> 2H2O}

$$ \ce{2H2 + O2 -> 2H2O} $$

PbClX2undefined熱湯PbX2++2ClX\ce{PbCl2 ->[熱湯] Pb^2+ + 2Cl-}

$$ \ce{PbCl2 ->[熱湯] Pb^2+ + 2Cl-} $$

ZnX2+undefined+2HX++2OHXZn(OH)X2amphoteres Hydroxidundefined+2HX++2OHX[Zn(OH)X4]X2Hydroxozikat\ce{Zn^2+ <=>[+ 2OH-][+ 2H+] \underset{\text{amphoteres Hydroxid}}{Zn(OH)2 v} <=>[+ 2OH-][+ 2H+] \underset{\text{Hydroxozikat}}{[Zn(OH)4]^2-} }

$$ \ce{ Zn^2+ <=>[+ 2OH-][+ 2H+] \underset{\text{amphoteres Hydroxid}}{Zn(OH)2 v} <=>[+ 2OH-][+ 2H+] \underset{\text{Hydroxozikat}}{[Zn(OH)4]^2-} } $$

触媒反応

2HX2OX2undefinedBrX22HX2O+OX2\ce{2H2O2 ->[Br_2] 2H2O + O2}

$$ \ce{2H2O2 ->[Br_2] 2H2O + O2} $$

熱化学方程式

HX2(g)+12OX2(g)undefinedHX2O(l)  ΔHX=286 kJmolX1\ce{H2(g) + 1/2 O2(g) -> H2O(l) \, \Delta H^{\circ} = -286 \, \mathrm{kJ \, mol}^{-1}}

$$ \ce{H2(g) + 1/2 O2(g) -> H2O(l) \, \Delta H^{\circ} = -286 \, \mathrm{kJ \, mol}^{-1}} $$

可逆反応

HX++:NHX3undefinedNHX4X+\ce{H+ + :NH3 <=> NH4+}

$$ \ce{H+ + :NH3 <=> NH4+} $$

CHX3COOHundefinedCHX3COOX+HX+\ce{CH3COOH <<=> CH3COO- + H+}

$$ \ce{CH3COOH <<=> CH3COO- + H+} $$

沈殿・気泡

PbX2X++2OHXundefinedPb(OH)X2\ce{Pb2+ + 2OH- -> Pb(OH)2 v}

$$ \ce{Pb2+ + 2OH- -> Pb(OH)2 v} $$

2ClXundefinedClX2+2eX\ce{2Cl- -> Cl2 ^ + 2e-}

$$ \ce{2Cl- -> Cl2 ^ + 2e-} $$

アレニウスの式

k=Aexp(EaRT)k = A \exp \left( - \dfrac{E_a}{RT} \right)

$$ k = A \exp \left( - \dfrac{E_a}{RT} \right) $$

ネルンストの式

E=E+RTzFlnaOxaRedE = E^{\circ} + \dfrac{RT}{zF} \ln \dfrac{a_{Ox}}{a_{Red}}

$$ E = E^{\circ} + \dfrac{RT}{zF} \ln \dfrac{a_{Ox}}{a_{Red}} $$

相律

F=CP+2F = C - P + 2

$$ F = C - P + 2 $$

クラウジウス-クラペイロンの式

dpvapdT=ΔvapHTΔvapV\dfrac{dp_{vap}}{dT} = \dfrac{\Delta_{vap} H}{T \Delta_{vap} V}

$$ \dfrac{dp_{vap}}{dT} = \dfrac{\Delta_{vap} H}{T \Delta_{vap} V} $$

イオン強度

I=12imizi2I = \dfrac{1}{2} \sum_i m_i z_i^2

$$ I = \dfrac{1}{2} \sum_i m_i z_i^2 $$

ミカエリス・メンテン式

v=Vmax[S]Km+[S]v = \dfrac{V_{max} [\ce{S}]}{K_m + [\ce{S}]}

$$ v = \dfrac{V_{max} [\ce{S}]}{K_m + [\ce{S}]} $$