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Does the overall enthalpy change of a chemical reaction depend on the reaction pathway?
No, the overall enthalpy change of a chemical reaction is independent of the reaction pathway. This is because enthalpy is a state function, meaning it only depends on the initial and final states of the system, not on how the system reached those states.
What is the enthalpy of a reaction?
The amount of energy that is used or released as heat in a reaction.
The favorability or spontaneity of a reaction increases when during the course of a reaction?
The favorability or spontaneity of a reaction increases when the overall entropy of the system increases, or when the free energy of the system decreases. This can happen when reactants are in a more disordered state, when the system achieves greater stability, or when the reaction releases heat.
Why is reaction rate extensive?
Reaction rate is considered extensive because it depends on the amount of reactants present in a system. As the quantity of reactants increases, the number of collisions between molecules also increases, leading to a higher reaction rate. This relationship demonstrates the direct proportionality between the amount of reactants and the rate at which a reaction occurs.
How can the enthalpy change be determined for a reaction in an aqueous solution?
Utilizing a thermometer to measure the temperature change of the solution can be used (along with the mass of the reactant(s)) to determine the enthalpy change for an aqueous reaction, as long as the reaction is carried out in a calorimeter or similar apparatus so that no external heat is added or removed from the system.
Is enthalpy conserved in a closed system undergoing a chemical reaction?
Enthalpy is not conserved in a closed system undergoing a chemical reaction.
Is the heat of reaction the same as enthalpy?
No, the heat of reaction is not the same as enthalpy. Enthalpy is a measure of the total heat energy in a system, while the heat of reaction specifically refers to the heat energy released or absorbed during a chemical reaction.
What is the equation for calculating the change in enthalpy of a system during a chemical reaction?
The equation for calculating the change in enthalpy of a system during a chemical reaction is H H(products) - H(reactants), where H represents the change in enthalpy, H(products) is the enthalpy of the products, and H(reactants) is the enthalpy of the reactants.
Does the overall enthalpy change of a chemical reaction depend on the reaction pathway?
No, the overall enthalpy change of a chemical reaction is independent of the reaction pathway. This is because enthalpy is a state function, meaning it only depends on the initial and final states of the system, not on how the system reached those states.
What does the enthaply of reaction measure?
The enthalpy of reaction measures the amount of heat absorbed or released during a chemical reaction at constant pressure. It indicates whether a reaction is exothermic (heat is released) or endothermic (heat is absorbed).
What is the difference between the heat of reaction and enthalpy in a chemical reaction?
The heat of reaction is the amount of heat released or absorbed during a chemical reaction, while enthalpy is the total heat content of a system. Enthalpy includes the heat of reaction as well as any changes in pressure and volume.
What is a correct description of the enthalpy of a reaction?
The enthalpy of a reaction does not depend on the intermediate reactions.
What is the sign of the enthalpy change for an endothermic reaction?
Endothermic reaction: In an endothermic reaction, the products are higher in energy than the reactants. Therefore, the change in enthalpy is positive, and heat is absorbed from the surroundings by the reaction therefore enthalpy change show positive sign in a endothermic reaction..
What is the enthalpy of a reaction?
The amount of energy that is used or released as heat in a reaction.
What is the difference between enthalpy and heat of reaction in a chemical reaction?
Enthalpy is the total heat content of a system, including both heat absorbed and released during a reaction. Heat of reaction specifically refers to the heat released or absorbed when a specific chemical reaction occurs.
How can one determine the change in enthalpy of a reaction?
The change in enthalpy of a reaction can be determined by measuring the heat released or absorbed during the reaction. This is typically done using a calorimeter, which allows for the precise measurement of the temperature change that occurs. The change in enthalpy is then calculated using the heat capacity of the system and the temperature change.
What is delta h in the equation delta g delta h - t delta s?
Delta H represents the change in enthalpy of a system. In the equation ΔG = ΔH - TΔS, it is the enthalpy change of the system. It indicates the heat absorbed or released during a reaction at constant pressure.
