What are some examples of chemical equations?

Question

Luna Chen · Accepted Answer

Chemical Equations are a basic mathematical statement showing the molecules involved as reactants and the outcomes known as products.

There are 6 basic forms of chemical equations.

Synthesis is a reaction of two atoms or molecules combining to form one product.

#A + B -> AB#
#2H_2 + O_2 -> 2H_2O#

Decomposition is the breakdown of one molecule into component parts.

#AB -> A + B#
#2KClO_3 -> 2KCl + 3O_2#

Single Displacement reactions exchange one element with a molecule.

#AB + C -> CB + A#
#CaCl_2 + Mg -> MgCl_2 + Ca#

Double Displacement reactions exchange two molecules.

#AB + CD -> AD + CB#
#NaCl + KNO_3 -> NaNO_3 + KCl#

Combustion reactions burn a hydrocarbon in oxygen to produce water and carbon dioxide.

#CH + O -> CO_2 + H_2O#
#C_3H_8 + 5O_2 -> 3CO_2 + 4H_2O#

and

Neutralization reaction combine an acid and a base to neutralize into salt and water.

#HA + BOH -> BA + H_2O#
#HCl + NaOH -> NaCl + H_2O#

I hope this was helpful.
SMARTERTEACHER

Xavier Avery · Answer

undefined 1. **Combustion Reaction:**
   $ CH_{4(g)} + 2O_{2(g)} \rightarrow CO_{2(g)} + 2H_{2}O_{(g)} $

2. **Synthesis Reaction:**
   $ 2Na_{(s)} + Cl_{2(g)} \rightarrow 2NaCl_{(s)} $

3. **Decomposition Reaction:**
   $ 2H_{2}O_{2(aq)} \rightarrow 2H_{2}O_{(l)} + O_{2(g)} $

4. **Single Replacement Reaction:**
   $ Zn_{(s)} + 2HCl_{(aq)} \rightarrow ZnCl_{2(aq)} + H_{2(g)} $

5. **Double Replacement Reaction:**
   $ AgNO_{3(aq)} + NaCl_{(aq)} \rightarrow AgCl_{(s)} + NaNO_{3(aq)} $