The only time you will see an A and a B in this type of reaction is for the generic description, such as in A + BC ==> AC + B and it simply represents two elements that usual are some type of metal element.
This is called a replacement reaction. When one element replaces another in a compound, it is called single replacement or single displacement. An example isZn + 2HCl ---> ZnCl2 + H2 where the zinc replaces the hydrogen in the acid to form zinc chloride.
Synthesis reaction: A + B → AB (e.g. 2H2 + O2 → 2H2O) Decomposition reaction: AB → A + B (e.g. 2H2O → 2H2 + O2) Single displacement reaction: A + BC → AC + B (e.g. Zn + 2HCl → ZnCl2 + H2) Double displacement reaction: AB + CD → AD + CB (e.g. AgNO3 + NaCl → AgCl + NaNO3) Combustion reaction: Hydrocarbon + O2 → CO2 + H2O (e.g. CH4 + 2O2 → CO2 + 2H2O)
.Ab + c cb + a
In a single replacement reaction, the element replaces the one of the ions in the compound, depending whether the element is more likely to give away electrons or take electrons. As well, the reactivity of the element in comparison to the ion that is being replaced determines whether the reaction will occur. In this case, there is no element in the question asked, but a half reaction can be created. In the case of the aluminum, it can gain 3 electrons, and therefore becomes an atom rather than an ion. Al3+(aq) +3e- -> Al(s) In the case of the chlorine, it can lose 3 electrons, and therefore becomes an atom rather than an ion, as well. 3Cl-(aq) -> 1/2Cl2(g) + 3e-
single-replacement reactions and a double-replacement reactions differ in the fact that in a single-replacement reaction only one element that has a positive charge is oxidized or looses electrons. In double-replacement reactions two elements in a compound that contain a positive charge are oxidized.
A single replacement reaction involve the replacement of an element with other in the molecule as in this model:A + B-C = A-C + B.
A+bc---> b+ac
Synthesis - A + B = AB Decomposition - AB = A + B Single Replacement - A + BC = B + AC Double Replacement - AB + CD = AD + CB Combustion - either a synthesis, decomposition, or single replacement reaction. It combines with oxygen.
associative? single replacement
associative? single replacement
A single replacement reaction equation consists of a reactant compound and a new product compound formed by the replacement of an element in the reactant with another element. The general form is: A + BC -> AC + B, where A and B are elements, and BC is a compound.
This is called a replacement reaction. When one element replaces another in a compound, it is called single replacement or single displacement. An example isZn + 2HCl ---> ZnCl2 + H2 where the zinc replaces the hydrogen in the acid to form zinc chloride.
Synthesis reaction: A + B → AB (e.g. 2H2 + O2 → 2H2O) Decomposition reaction: AB → A + B (e.g. 2H2O → 2H2 + O2) Single displacement reaction: A + BC → AC + B (e.g. Zn + 2HCl → ZnCl2 + H2) Double displacement reaction: AB + CD → AD + CB (e.g. AgNO3 + NaCl → AgCl + NaNO3) Combustion reaction: Hydrocarbon + O2 → CO2 + H2O (e.g. CH4 + 2O2 → CO2 + 2H2O)
The type of reaction that always has an element and a compound as reactants is a single displacement reaction, or a substitution reaction. These are of the form A + BC ---> AC + B.
.Ab + c cb + a
A single-displacement reaction, also called single-replacement reaction, is a type of oxidation-reduction chemical reaction when an element or ion moves out of one compound and into another. (One element is replaced by another in a compound.) This is usually written asA + BX → AX + B
A+bc---> b+ac