In which of the following reactions is the enthalpy change likely to be the largest?
Practice Questions
1 question
Q1
In which of the following reactions is the enthalpy change likely to be the largest?
Dissolving salt in water
Combustion of gasoline
Melting of ice
Sublimation of dry ice
The combustion of gasoline releases a large amount of energy, resulting in a large enthalpy change.
Questions & Step-by-step Solutions
1 item
Q
Q: In which of the following reactions is the enthalpy change likely to be the largest?
Solution: The combustion of gasoline releases a large amount of energy, resulting in a large enthalpy change.
Steps: 5
Step 1: Understand what enthalpy change means. It is the amount of energy released or absorbed during a chemical reaction.
Step 2: Identify the reactions being compared. Look for reactions that involve combustion, especially of fuels like gasoline.
Step 3: Recognize that combustion reactions typically release a lot of energy because they involve breaking bonds in reactants and forming new bonds in products.
Step 4: Compare the energy released in the combustion of gasoline to other reactions. Gasoline combustion is known to release a significant amount of energy.
Step 5: Conclude that the combustion of gasoline is likely to have the largest enthalpy change among the reactions listed.
