10 Questions
Which of the following statements is correct regarding spontaneous reactions?
They can be endothermic or exothermic.
In thermodynamics, which of the following is true about entropy?
Entropy increases with increasing disorder in a system.
What does the second law of thermodynamics state about entropy?
The entropy of the universe increases in spontaneous processes.
How can entropy change (ΔS) be calculated?
ΔS = Σ Sproducts - Σ Sreactants
What does entropy measure in a system?
The disorder in the system
Which type of reactions usually involve an increase in entropy?
Spontaneous reactions
What is the relationship between gas and solid in terms of entropy?
Gas has higher entropy than solid.
'A mixture > a pure substance' implies what about entropy?
'A mixture' has higher entropy than 'a pure substance'.
'6 molecules > 2 molecules' suggests what about entropy?
'6 molecules' has higher entropy than '2 molecules'.
Which of the following does NOT contribute to an increase in entropy?
Converting a gas to a solid
Test your knowledge on forming ionic bonds by removing and giving electrons to atoms, and calculating the energy change in an enthalpy cycle. Explore concepts related to cations, anions, elements, and the formation of ionic compounds.
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