What types of chemical reactions are the following?
Al + GaP → Ga + AlP: d. Single Replacement
2 Mg + O2 → 2 MgO:
MgO + BeSe → BeO + MgSe:
CH4 + 2O2 → CO2 + 2H2O:
2 NaCl → Na + Cl2:
Single Replacement (d)
Combustion (e)
Double Replacement (c)
Combustion (e)
Decomposition (b)
Combustion (e)
To determine the types of chemical reactions, it is important to understand the different categories of reactions. Here are the explanations for each of the given reactions:
1. Al + GaP → Ga + AlP:
This reaction involves the displacement of one element by another. It is called a single replacement reaction or a substitution reaction. In this case, aluminum (Al) replaces gallium (Ga) in the compound gallium phosphide (GaP). The resulting products are gallium (Ga) and aluminum phosphide (AlP).
2. 2 Mg + O2 → 2 MgO:
This reaction involves the combination of a metal (magnesium, Mg) with oxygen gas (O2) to produce a metal oxide (magnesium oxide, MgO). This type of reaction is known as a synthesis reaction or a combination reaction.
3. MgO + BeSe → BeO + MgSe:
This reaction involves the exchange of ions between two compounds. It is called a double replacement reaction or a metathesis reaction. In this case, magnesium oxide (MgO) reacts with beryllium selenide (BeSe) to produce beryllium oxide (BeO) and magnesium selenide (MgSe).
4. CH4 + 2O2 → CO2 + 2H2O:
This reaction involves the reaction of methane (CH4), a hydrocarbon, with oxygen gas (O2). It undergoes a combustion reaction, where a fuel (CH4) reacts with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O). Combustion reactions are exothermic, meaning they release heat and energy.
5. 2 NaCl → Na + Cl2:
This reaction involves the breakdown of a compound into its elements. It is called a decomposition reaction. In this case, sodium chloride (NaCl) decomposes into sodium metal (Na) and chlorine gas (Cl2).
2 Mg + O2 → 2 MgO: b. Combination
MgO + BeSe → BeO + MgSe: c. Double Replacement
CH4 + 2O2 → CO2 + 2H2O: e. Combustion
2 NaCl → Na + Cl2: d. Decomposition