What is the effect of increasing temperature on the enthalpy of a substance?
Practice Questions
1 question
Q1
What is the effect of increasing temperature on the enthalpy of a substance?
Enthalpy decreases
Enthalpy increases
Enthalpy remains constant
Enthalpy becomes negative
Increasing temperature generally increases the enthalpy of a substance due to increased kinetic energy.
Questions & Step-by-step Solutions
1 item
Q
Q: What is the effect of increasing temperature on the enthalpy of a substance?
Solution: Increasing temperature generally increases the enthalpy of a substance due to increased kinetic energy.
Steps: 5
Step 1: Understand what enthalpy is. Enthalpy is a measure of the total energy of a substance, including its internal energy and the energy required to make space for it.
Step 2: Recognize that temperature is a measure of the average kinetic energy of the particles in a substance.
Step 3: Realize that when you increase the temperature of a substance, the particles move faster because they have more kinetic energy.
Step 4: A faster movement of particles means that they have more energy, which contributes to an increase in the total energy of the substance.
Step 5: Since enthalpy is related to the total energy of the substance, an increase in temperature leads to an increase in enthalpy.
