- Joined
- May 20, 2016
- Messages
- 57
- Reaction score
- 88
I know that
1. Entropy decreases from Gas > Liquid > Solid
2. 2 moles of a substance has more entropy than 1 mole
3. Greater molar mass/complexity means more entropy
Is there anything else I am missing?
This Khan Q said Na+ (aq) has greater entropy than PO3-4 (aq) because "Solvating ions in water creates more order since the water molecules have to organize itself around the ions. Ions tend to have negative standard entropies. In comparing the two ions, ions with a greater charge will tend to have more negative standard entropies."
But my TPR book said that "Particles in sol'n have more entropy than undissolved solids"
Is this question unique because it's talking specifically about water and not a general solution? I also don't really understand their explanation, it doesn't seem intuitive that solvating ions in water creates more order...
1. Entropy decreases from Gas > Liquid > Solid
2. 2 moles of a substance has more entropy than 1 mole
3. Greater molar mass/complexity means more entropy
Is there anything else I am missing?
This Khan Q said Na+ (aq) has greater entropy than PO3-4 (aq) because "Solvating ions in water creates more order since the water molecules have to organize itself around the ions. Ions tend to have negative standard entropies. In comparing the two ions, ions with a greater charge will tend to have more negative standard entropies."
But my TPR book said that "Particles in sol'n have more entropy than undissolved solids"
Is this question unique because it's talking specifically about water and not a general solution? I also don't really understand their explanation, it doesn't seem intuitive that solvating ions in water creates more order...