Question

Which statement about entropy is true? O Non-spontaneous reactions sometimes will happen all by themselves. O Entropy stops when pure substances are in solid state The entropy of the universe is increasing. o During a change of state there is no change in entropy.

Answer 1

Step-by-step explanation:

• Entropy stops when pure substances are in solid state: false. The entropy is 0 when the temperature is 0K, not by the solid state.
• The entropy of the universe is increasing. true. The second law of thermodynamics says: The level of disorder in the universe is steadily increasing.
• During a change of state there is no change in entropy. false. A change of state occurs with a change of the energy of the system and a change of energy always will change the entropy of the system
• Non-spontaneous reactions sometimes will happen all by themselves false. Non-spontaneous reactions never occurs by themselves. Also, this have no immediate relation between non-spontaneous reactions and entropy. Also you have to study the enthalpy of the process.

I hope it helps!