Which form of copper is more stable?

Cu2+ is more stable than Cu+.Stability depends on the hydration energy (enthalpy) of the ions when they bond to the water molecules. The Cu2+ ion has a greater charge density than Cu+ ion and thus forms much stronger bonds releasing more energy.

What is the difference between CuCl and CuCl2?

For copper chloride the copper charge is 1. This forms either CuCl or CuCl2 as the copper binds to chlorine. In the case of CuCl, the chloride ion has a charge of -1, so to make the compound stable the copper must have a charge of +1. Therefore, copper(I) chloride is called CuCl.

Why is Cu2Cl2 Colourless?

The presence of one unpaired electron in a 3d orbital accounts for its colour. In Cu2Cl2, copper is monovalent with completely filled 3d orbitals with 10 electrons. There is no unpaired electron available for transition by absorption of light in the visible region.

What is the oxidation number of copper in Cu2Cl2?

In Cucl2 oxidation state of cu is +2 and in cu2cl2 oxidation state of cu is +1 and ionic radius of cu+2 is less than cu+1 as a result more water molecules surround the smaller ion and interactions between lone pairs of oxygen and copper ion and more heat is released in case of cu+2 and also Δ G = Δ H − T Δ S entropy …

Why the stability of Cu+ is less than cu2+ in any aqueous solution?

Stability depends on the hydration energy (enthalpy) of the ions when they bond to the water molecules. The Cu2+ ion has a greater charge density than Cu+ ion and thus forms much stronger bonds releasing more energy.

Which oxidation state of copper is more stable?

+2 oxidation
When copper has an oxidation state of +1 it is called cuprous, this is as the 4s electron gets removed. But copper has a more stable +2 oxidation state called cupric.

Why is CU unstable in aqueous solution?

This is because although energy is required to remove one electron from Cu+ to Cu2+, high hydration energy of Cu2+ compensates for it. Therefore, Cu+ion in an aqueous solution is unstable. It disproportionates to give Cu2+ and Cu.

Is CuCl or CuCl2 more stable?

Answer : CuCl2 is more stable because Cu2+ has a higher electron density than Cu+.

Why CuCl is written as Cu2Cl2?

What is the difference between Cu2Cl2 and CuCl2? – Quora. In Cu2Cl2 the oxidation state of Cu is +1 and therefore it can be also written as CuCl. CuCl2 , oxidation state of Cu is +2. Cu+( aq)= Cu +Cu2+(aq ) Cu+ undergoes disproportionation in aqueous solution.

Why is CuCl2 more stable than CuCl in an aqueous solution?

When the ionic size decreases hydration energy becomes more negative and the ion becomes more stable. Thus in aqueous solution CuCl2 is more stable than CuCl due to more negative hydration energy. The CuCl2 is more stable than Cu2Cl2.

What is the oxidation state of cu in cu2cl2?

In Cu2Cl2 the oxidation state of Cu is +1 and therefore it can be also written as CuCl. CuCl2 , oxidation state of Cu is +2. Cu2Cl2 is known as cuprous chloride. In aqueous solution Cu+ ( aq)= Cu +Cu2+ (aq ) Cu+ undergoes disproportionation in aqueous solution.

What is the name of the compound with the formula CuCl2?

Copper chloride is the higher chloride of copper with the formula CuCl2. It occurs naturally as the mineral eriochalcite. It is a brown solid which slowly absorbs moisture to form a blue green dihydrate. It is ionic and highly soluble in water.