Answer:
HClO4(aq) + H2O(l) ⇄ H3O+(aq) + ClO4-(aq)
Explanation:
When an acid dissolves in water, it will produce hydronium ion, H3O+ as the only positive ion.
perchloric acid, HClO4, being an acid will react with water, H2O to produce hydronium ion, H3O+ as shown below:
HClO4(aq) + H2O(l) ⇄ H3O+(aq) + ClO4-(aq)
Answer:
1) polar
2)polar (not too sure about this one)
3)nonpolar
Answer:
a. The reaction associated with DHºf for an ionic compound
Explanation:
An exothermic process is a process that loses heat for the surroundings, so the temperature of the system must decrease, and ΔH must be negative.
DHºf or ΔHºf of an ionic compound is always negative because the final energy is always lower than the initial. It happens because of the stability of the bond, the system wants a lower energy state to be stable.
The ionization of a lithium atom occurs with the gain of energy, which is given to the electron, so it may give off the atom. So it's an endothermic process.
To change the state of a solid to a gas (sublimation), the compound must gain heat, its temperature must increase, so it's always an endothermic process.
To break a covalent bond it's necessary the gain of energy, so it's an endothermic process.
Answer:
Density
Explanation:
Intensive properties are those properties that do not depend on the size of the system or on the amount of matter in the system.
If materials are being sorted out for recycling, then materials can be sorted in accordance with their different densities and packed as such, this is quite a convenient way of sorting out the materials for recycling, hence the answer above.
