Respiration is considered an exothermic reaction because it releases energy in the form of heat. This energy is released when the chemical bonds in organic molecules, such as glucose, are broken down and the products are formed. During respiration, glucose and oxygen are used as reactants, and the rRead more
Respiration is considered an exothermic reaction because it releases energy in the form of heat. This energy is released when the chemical bonds in organic molecules, such as glucose, are broken down and the products are formed. During respiration, glucose and oxygen are used as reactants, and the reaction proceeds to produce carbon dioxide, water, and energy. Here’s why respiration is classified as an exothermic reaction:
Energy Release: The primary purpose of respiration is to generate energy in the form of adenosine triphosphate (ATP) that can be used by cells for various metabolic processes. The breakdown of glucose during respiration yields energy that is essential for cellular functions.
Higher Energy Reactants, Lower Energy Products: In the chemical reactions involved in respiration, the reactants (glucose and oxygen) contain higher chemical potential energy compared to the products (carbon dioxide and water). This difference in energy content results in a net release of energy, which is primarily in the form of heat.
Heat Production: The metabolic reactions during respiration involve the oxidation of glucose, which releases energy and produces carbon dioxide and water. The release of this energy contributes to the body’s heat production and helps maintain the core body temperature. This heat is especially important in warm-blooded animals, including humans, to regulate their internal temperature.
Exothermic Nature: Respiration is classified as an exothermic reaction because it follows the fundamental principle of exothermic reactions, where the overall heat change (ΔH) is negative, indicating that heat is released during the process. The release of heat is a hallmark of exothermic reactions.
In summary, respiration is considered exothermic because it involves the conversion of higher-energy reactants (glucose and oxygen) into lower-energy products (carbon dioxide and water), with the release of energy, including heat. This energy is vital for sustaining life and maintaining the body’s functions, and it plays a crucial role in thermoregulation, allowing organisms to maintain a stable body temperature.
These equations are now balanced, ensuring that the number of atoms of each element on both sides of the equation is the same, in accordance with the law of conservation of mass.
Exothermic reactions are often associated with a temperature increase in the surroundings. Common examples of exothermic reactions include combustion reactions (e.g., burning of wood or gasoline), neutralization reactions (e.g., the reaction between an acid and a base to form water and a salt), andRead more
Exothermic reactions are often associated with a temperature increase in the surroundings.
Common examples of exothermic reactions include combustion reactions (e.g., burning of wood or gasoline), neutralization reactions (e.g., the reaction between an acid and a base to form water and a salt), and many oxidation reactions.
Example: The combustion of methane (CH4) in the presence of oxygen is highly exothermic.
CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) + heat
Endothermic reactions often result in a decrease in temperature in the surroundings.
Common examples of endothermic reactions include dissolving certain salts in water, the process of photosynthesis, and the evaporation of water.
Example: The dissolution of ammonium nitrate in water is an endothermic process.
NH4NO3(s) + H2O(l) → NH4+ (aq) + NO3- (aq) + heat absorbed
In summary, exothermic reactions release heat and have products with lower energy than the reactants, while endothermic reactions absorb heat and have products with higher energy than the reactants. These terms are essential in understanding the thermodynamics of chemical reactions and how energy is transferred during chemical processes.
A balanced chemical equation is a representation of a chemical reaction that shows the same number of atoms of each element on both the reactant and product sides of the equation. In a balanced equation, the law of conservation of mass is upheld, which means that matter is neither created nor destroRead more
A balanced chemical equation is a representation of a chemical reaction that shows the same number of atoms of each element on both the reactant and product sides of the equation. In a balanced equation, the law of conservation of mass is upheld, which means that matter is neither created nor destroyed during a chemical reaction. This principle is fundamental in chemistry.
When dilute hydrochloric acid (HCl) is added to iron fillings, a chemical reaction occurs. The reaction can be represented by the following equation: Fe(s) + 2HCl(aq) → FeCl2(aq) + H2(g) In this reaction: Iron (Fe) reacts with hydrochloric acid to form iron chloride (FeCl2) and hydrogen gas (H2). IrRead more
When dilute hydrochloric acid (HCl) is added to iron fillings, a chemical reaction occurs. The reaction can be represented by the following equation:
Fe(s) + 2HCl(aq) → FeCl2(aq) + H2(g)
In this reaction:
Iron (Fe) reacts with hydrochloric acid to form iron chloride (FeCl2) and hydrogen gas (H2).
Iron undergoes a chemical change and is dissolved in the hydrochloric acid to form iron chloride.
Hydrogen gas is evolved as a product of the reaction and is released as bubbles.
This reaction is an example of a single displacement or single replacement reaction, where one element (iron) displaces another element (hydrogen) from a compound (hydrochloric acid). It’s important to note that the reaction typically occurs more readily with dilute hydrochloric acid compared to concentrated acid. The hydrogen gas produced can be tested by its flammability, as hydrogen is a flammable gas, and it will burn with a pop sound when ignited in the presence of oxygen.
Why is respiration considered an exothermic reaction? Explain.
Respiration is considered an exothermic reaction because it releases energy in the form of heat. This energy is released when the chemical bonds in organic molecules, such as glucose, are broken down and the products are formed. During respiration, glucose and oxygen are used as reactants, and the rRead more
Respiration is considered an exothermic reaction because it releases energy in the form of heat. This energy is released when the chemical bonds in organic molecules, such as glucose, are broken down and the products are formed. During respiration, glucose and oxygen are used as reactants, and the reaction proceeds to produce carbon dioxide, water, and energy. Here’s why respiration is classified as an exothermic reaction:
Energy Release: The primary purpose of respiration is to generate energy in the form of adenosine triphosphate (ATP) that can be used by cells for various metabolic processes. The breakdown of glucose during respiration yields energy that is essential for cellular functions.
Higher Energy Reactants, Lower Energy Products: In the chemical reactions involved in respiration, the reactants (glucose and oxygen) contain higher chemical potential energy compared to the products (carbon dioxide and water). This difference in energy content results in a net release of energy, which is primarily in the form of heat.
Heat Production: The metabolic reactions during respiration involve the oxidation of glucose, which releases energy and produces carbon dioxide and water. The release of this energy contributes to the body’s heat production and helps maintain the core body temperature. This heat is especially important in warm-blooded animals, including humans, to regulate their internal temperature.
Exothermic Nature: Respiration is classified as an exothermic reaction because it follows the fundamental principle of exothermic reactions, where the overall heat change (ΔH) is negative, indicating that heat is released during the process. The release of heat is a hallmark of exothermic reactions.
In summary, respiration is considered exothermic because it involves the conversion of higher-energy reactants (glucose and oxygen) into lower-energy products (carbon dioxide and water), with the release of energy, including heat. This energy is vital for sustaining life and maintaining the body’s functions, and it plays a crucial role in thermoregulation, allowing organisms to maintain a stable body temperature.
See lessWrite the balanced chemical equations for the following reactions.
1. Calcium hydroxide + Carbon dioxide → Calcium carbonate + Water Balanced Equation: Ca(OH)2 + CO2 → CaCO3 + H2O 2. Zinc + Silver nitrate → Zinc nitrate + Silver Balanced Equation: Zn + 2AgNO3 → Zn(NO3)2 + 2Ag 3. Aluminium + Copper chloride → Aluminium chloride + Copper Balanced Equation: 2Al + 3CuCRead more
1. Calcium hydroxide + Carbon dioxide → Calcium carbonate + Water
Balanced Equation:
Ca(OH)2 + CO2 → CaCO3 + H2O
2. Zinc + Silver nitrate → Zinc nitrate + Silver
Balanced Equation:
Zn + 2AgNO3 → Zn(NO3)2 + 2Ag
3. Aluminium + Copper chloride → Aluminium chloride + Copper
Balanced Equation:
2Al + 3CuCl2 → 2AlCl3 + 3Cu
4. Barium chloride + Potassium sulphate → Barium sulphate + Potassium chloride
Balanced Equation:
BaCl2 + K2SO4 → BaSO4 + 2KCl
These equations are now balanced, ensuring that the number of atoms of each element on both sides of the equation is the same, in accordance with the law of conservation of mass.
See lessWhat does one mean by exothermic and endothermic reactions? Give examples.
Exothermic reactions are often associated with a temperature increase in the surroundings. Common examples of exothermic reactions include combustion reactions (e.g., burning of wood or gasoline), neutralization reactions (e.g., the reaction between an acid and a base to form water and a salt), andRead more
Exothermic reactions are often associated with a temperature increase in the surroundings.
Common examples of exothermic reactions include combustion reactions (e.g., burning of wood or gasoline), neutralization reactions (e.g., the reaction between an acid and a base to form water and a salt), and many oxidation reactions.
Example: The combustion of methane (CH4) in the presence of oxygen is highly exothermic.
CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) + heat
Endothermic reactions often result in a decrease in temperature in the surroundings.
Common examples of endothermic reactions include dissolving certain salts in water, the process of photosynthesis, and the evaporation of water.
Example: The dissolution of ammonium nitrate in water is an endothermic process.
NH4NO3(s) + H2O(l) → NH4+ (aq) + NO3- (aq) + heat absorbed
In summary, exothermic reactions release heat and have products with lower energy than the reactants, while endothermic reactions absorb heat and have products with higher energy than the reactants. These terms are essential in understanding the thermodynamics of chemical reactions and how energy is transferred during chemical processes.
See lessWhat is a balanced chemical equation? Why should chemical equations be balanced?
A balanced chemical equation is a representation of a chemical reaction that shows the same number of atoms of each element on both the reactant and product sides of the equation. In a balanced equation, the law of conservation of mass is upheld, which means that matter is neither created nor destroRead more
A balanced chemical equation is a representation of a chemical reaction that shows the same number of atoms of each element on both the reactant and product sides of the equation. In a balanced equation, the law of conservation of mass is upheld, which means that matter is neither created nor destroyed during a chemical reaction. This principle is fundamental in chemistry.
See lessWhat happens when dilute hydrochloric acid is added to iron fillings?
When dilute hydrochloric acid (HCl) is added to iron fillings, a chemical reaction occurs. The reaction can be represented by the following equation: Fe(s) + 2HCl(aq) → FeCl2(aq) + H2(g) In this reaction: Iron (Fe) reacts with hydrochloric acid to form iron chloride (FeCl2) and hydrogen gas (H2). IrRead more
When dilute hydrochloric acid (HCl) is added to iron fillings, a chemical reaction occurs. The reaction can be represented by the following equation:
Fe(s) + 2HCl(aq) → FeCl2(aq) + H2(g)
In this reaction:
Iron (Fe) reacts with hydrochloric acid to form iron chloride (FeCl2) and hydrogen gas (H2).
See lessIron undergoes a chemical change and is dissolved in the hydrochloric acid to form iron chloride.
Hydrogen gas is evolved as a product of the reaction and is released as bubbles.
This reaction is an example of a single displacement or single replacement reaction, where one element (iron) displaces another element (hydrogen) from a compound (hydrochloric acid). It’s important to note that the reaction typically occurs more readily with dilute hydrochloric acid compared to concentrated acid. The hydrogen gas produced can be tested by its flammability, as hydrogen is a flammable gas, and it will burn with a pop sound when ignited in the presence of oxygen.