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Why are combustion reactions considered exceptions to the rules?
Combustion reactions always include O2 (Oxygen Gas) and a hydrocarbon (hydrogen and carbon) and the products are always CO2 and H2O. So, for example, you have C200H108 + O2 then the products will still be CO2 and H2O. It is considered an exception because normally, in chemical equations, the amount of reactants have to equal the amount of products.
Which element is always a reactant in a combustion reaction?
Every combustion reaction we deal with produces gas with oxygen in the product, so O2 (oxygen gas) must be a reactant. For example, methane reacts with Oxygen in this way: CH4(l) + O2(g) -> C02(g)+2H2(g) Note O2 in gaseous form as a reactant.
Why are combustion reactions considered exceptions to the rules of chemical reactions?
Combustion Reactions are always reacted with Oxygen gas in this case if you had C3H8+O2 you will ALWAYS get H2O+CO2 it does not matter if you have C100H54+O2 you will still get H2O+CO2 this is why combustion reactions are considered exceptions to the rules of a product or chemical reaction.
It is possible to predict the products of some chemical reactions?
11.2 AnswersIt is possible to predict the products of some chemical reactions. In order to do this, you must be able to recognize at least five general types of reactions. For example, in a combination reaction. the reactants are two or more substances and/or compounds and there is always a single product. In a decomposition reaction, a single compound is broken down into two or more simpler substances. In a single-replacement reaction, the reactants and products are an element and a compound. The activity series can be used to predict whether most single-replacement reactions will take place. A double-replacement reaction involves the exchange of ions between two compounds. This reaction generally takes place between two ionic compounds in aqueous solution. One of the reactants in a combustion reaction is oxygen. The products of the complete combustion of a hydrocarbon are carbon dioxide and water.
There are several types of evidence that suggests a chemical reaction has occurred What always happens?
One key indicator that a chemical reaction has occurred is the formation of new substances with different properties than the original reactants. This change is irreversible, meaning the reactants cannot return to their original form once the reaction has taken place. Additionally, a chemical reaction often involves the absorption or release of energy in the form of heat or light.
Is always a reactants in a combustion reaction?
Oxygen
What is always a reactant in a combustion reaction?
Oxygen
Which elements is always present in combustion reaction?
oxygen
Which element is always presented in a combustion reaction?
oxygen
In a combustion reaction the always changes oxidation number making this aN reaction?
oxygen, redox
Can MgSO4 Ba BaSO4 Mg be a combustion reaction?
Assuming you have given a complete equation, no. It requires oxygen as a reactant and will always have CO2 and H2O as products. Plus, combustion reactions typically involve carbon based elements as reactants.
What type of chemical reaction classes always involve oxidation?
The combination of two elements (a metal and a nonmetal) is always a redox reaction.
Why are combustion reactions considered exceptions to the rules?
Combustion reactions always include O2 (Oxygen Gas) and a hydrocarbon (hydrogen and carbon) and the products are always CO2 and H2O. So, for example, you have C200H108 + O2 then the products will still be CO2 and H2O. It is considered an exception because normally, in chemical equations, the amount of reactants have to equal the amount of products.
In what type of reaction is water always a product?
In hydrolysis reactions, water is always a product. Hydrolysis involves breaking a compound apart by adding a molecule of water.
Why is combustion exothermic reaction?
because during combustion heat energy is released. for example the burning of carbon in air is a combustion reaction but in this process 393.7 K.J/mol energy is released
Which element is always a reactant in a combustion reaction?
Every combustion reaction we deal with produces gas with oxygen in the product, so O2 (oxygen gas) must be a reactant. For example, methane reacts with Oxygen in this way: CH4(l) + O2(g) -> C02(g)+2H2(g) Note O2 in gaseous form as a reactant.
What is always present for a combustion reaction to occur?
For a combustion reaction to occur, three things are required: fuel (such as gas or wood), oxygen (usually from the air), and a source of heat (spark or flame) to initiate the reaction. Without any of these three components, combustion cannot take place.
