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Positive enthalpy means that energy is absorbed from the surroundings during a process. This usually indicates an endothermic reaction where heat is taken in. For example, when ice melts into water, it absorbs heat from its surroundings, resulting in a positive enthalpy change.
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Is a positive enthalpy change indicative of an endothermic reaction?
Yes, a positive enthalpy change is indicative of an endothermic reaction.
Is a positive enthalpy endothermic?
Yes, a positive enthalpy change indicates that a reaction is endothermic, meaning it absorbs heat from its surroundings.
Is the enthalpy of formation always negative?
No, the enthalpy of formation can be positive, negative, or zero, depending on the specific chemical reaction and the substances involved.
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 true of the enthalpy reaction?
The enthalpy of a reaction is a measure of the heat energy exchanged with the surroundings at constant pressure. A negative enthalpy change indicates an exothermic reaction, where heat is released. A positive enthalpy change indicates an endothermic reaction, where heat is absorbed.
Is a positive enthalpy change indicative of an endothermic reaction?
Yes, a positive enthalpy change is indicative of an endothermic reaction.
Is a positive enthalpy endothermic?
Yes, a positive enthalpy change indicates that a reaction is endothermic, meaning it absorbs heat from its surroundings.
What does it mean if the change in enthalpy value for a chemical reaction is positive?
A positive change in enthalpy for a chemical reaction indicates that the reaction is endothermic, meaning it absorbs heat from its surroundings. This typically results in the surroundings feeling cooler.
Does Ice melting have a positive or negative enthalpy?
Negtive
What does the enthalpy vs temperature graph reveal about the relationship between enthalpy and temperature?
The enthalpy vs temperature graph shows how enthalpy changes with temperature. It reveals that as temperature increases, enthalpy also tends to increase. This indicates a positive relationship between enthalpy and temperature.
What conditions make delta G always positive?
G is always positive when enthalpy increases and entropy decreases.
Bond enthalpy is always?
Bond enthalpy is the energy required to break one mole of a specific bond in a compound. It is always a positive value as energy is needed to break bonds.
What conditions make G positive?
G is always positive when enthalpy increases and entropy decreases.
Is the enthalpy of formation always negative?
No, the enthalpy of formation can be positive, negative, or zero, depending on the specific chemical reaction and the substances involved.
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 true of the enthalpy reaction?
The enthalpy of a reaction is a measure of the heat energy exchanged with the surroundings at constant pressure. A negative enthalpy change indicates an exothermic reaction, where heat is released. A positive enthalpy change indicates an endothermic reaction, where heat is absorbed.
Which is true of the enthalpy of a reaction?
Its value does not depend on which reactions are added.
